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Finding the Fourth Proportional to 876.91, 1,210.07 and 483.94

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Solution

The fourth proportional to 876.91, 1,210.07 and 483.94 is: 667.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    876.91 : 1,210.07 = 483.94 : x
  2. Step 2: Convert to fraction form
    876.91/1,210.07 = 483.94/x
  3. Step 3: Cross multiply
    876.91x = 1,210.07 × 483.94
  4. Step 4: Simplify right side
    876.91x = 585,599.46
  5. Step 5: Solve for x
    x = 585,599.46/876.91
  6. Step 6: Final answer
    x = 667.80

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Double scale
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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.