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Finding the Fourth Proportional to 830.66, 1,246.28 and 282.89

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Solution

The fourth proportional to 830.66, 1,246.28 and 282.89 is: 424.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    830.66 : 1,246.28 = 282.89 : x
  2. Step 2: Convert to fraction form
    830.66/1,246.28 = 282.89/x
  3. Step 3: Cross multiply
    830.66x = 1,246.28 × 282.89
  4. Step 4: Simplify right side
    830.66x = 352,552.50
  5. Step 5: Solve for x
    x = 352,552.50/830.66
  6. Step 6: Final answer
    x = 424.43

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.