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Finding the Fourth Proportional to 615.46, 922.15 and 432.52

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Solution

The fourth proportional to 615.46, 922.15 and 432.52 is: 648.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.46 : 922.15 = 432.52 : x
  2. Step 2: Convert to fraction form
    615.46/922.15 = 432.52/x
  3. Step 3: Cross multiply
    615.46x = 922.15 × 432.52
  4. Step 4: Simplify right side
    615.46x = 398,848.32
  5. Step 5: Solve for x
    x = 398,848.32/615.46
  6. Step 6: Final answer
    x = 648.05

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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.