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Finding the Fourth Proportional to 424.64, 636.12 and 352.28

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Solution

The fourth proportional to 424.64, 636.12 and 352.28 is: 527.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.64 : 636.12 = 352.28 : x
  2. Step 2: Convert to fraction form
    424.64/636.12 = 352.28/x
  3. Step 3: Cross multiply
    424.64x = 636.12 × 352.28
  4. Step 4: Simplify right side
    424.64x = 224,092.35
  5. Step 5: Solve for x
    x = 224,092.35/424.64
  6. Step 6: Final answer
    x = 527.72

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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.