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Finding the Fourth Proportional to 636.88, 956.14 and 432.36

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Solution

The fourth proportional to 636.88, 956.14 and 432.36 is: 649.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.88 : 956.14 = 432.36 : x
  2. Step 2: Convert to fraction form
    636.88/956.14 = 432.36/x
  3. Step 3: Cross multiply
    636.88x = 956.14 × 432.36
  4. Step 4: Simplify right side
    636.88x = 413,396.69
  5. Step 5: Solve for x
    x = 413,396.69/636.88
  6. Step 6: Final answer
    x = 649.10

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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.