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Finding the Fourth Proportional to 730.97, 1,008.38 and 531.49

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Solution

The fourth proportional to 730.97, 1,008.38 and 531.49 is: 733.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.97 : 1,008.38 = 531.49 : x
  2. Step 2: Convert to fraction form
    730.97/1,008.38 = 531.49/x
  3. Step 3: Cross multiply
    730.97x = 1,008.38 × 531.49
  4. Step 4: Simplify right side
    730.97x = 535,941.70
  5. Step 5: Solve for x
    x = 535,941.70/730.97
  6. Step 6: Final answer
    x = 733.20

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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.