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Finding the Fourth Proportional to 1,210.76, 1,673.04 and 945.89

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Solution

The fourth proportional to 1,210.76, 1,673.04 and 945.89 is: 1,307.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210.76 : 1,673.04 = 945.89 : x
  2. Step 2: Convert to fraction form
    1,210.76/1,673.04 = 945.89/x
  3. Step 3: Cross multiply
    1,210.76x = 1,673.04 × 945.89
  4. Step 4: Simplify right side
    1,210.76x = 1,582,513.26
  5. Step 5: Solve for x
    x = 1,582,513.26/1,210.76
  6. Step 6: Final answer
    x = 1,307.04

Related Problems

Find fourth proportional to 605.38, 836.52 and 472.94
Half scale
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Double scale
Find fourth proportional to 1,211.76, 1,674.43 and 946.89
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.