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Finding the Fourth Proportional to 693.38, 956.88 and 431.25

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Solution

The fourth proportional to 693.38, 956.88 and 431.25 is: 595.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    693.38 : 956.88 = 431.25 : x
  2. Step 2: Convert to fraction form
    693.38/956.88 = 431.25/x
  3. Step 3: Cross multiply
    693.38x = 956.88 × 431.25
  4. Step 4: Simplify right side
    693.38x = 412,654.50
  5. Step 5: Solve for x
    x = 412,654.50/693.38
  6. Step 6: Final answer
    x = 595.14

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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.