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Finding the Fourth Proportional to 697.47, 961.46 and 531.39

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Solution

The fourth proportional to 697.47, 961.46 and 531.39 is: 732.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.47 : 961.46 = 531.39 : x
  2. Step 2: Convert to fraction form
    697.47/961.46 = 531.39/x
  3. Step 3: Cross multiply
    697.47x = 961.46 × 531.39
  4. Step 4: Simplify right side
    697.47x = 510,911.56
  5. Step 5: Solve for x
    x = 510,911.56/697.47
  6. Step 6: Final answer
    x = 732.52

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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.