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Finding the Fourth Proportional to 951.32, 1,425.76 and 488.72

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Solution

The fourth proportional to 951.32, 1,425.76 and 488.72 is: 732.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.32 : 1,425.76 = 488.72 : x
  2. Step 2: Convert to fraction form
    951.32/1,425.76 = 488.72/x
  3. Step 3: Cross multiply
    951.32x = 1,425.76 × 488.72
  4. Step 4: Simplify right side
    951.32x = 696,797.43
  5. Step 5: Solve for x
    x = 696,797.43/951.32
  6. Step 6: Final answer
    x = 732.45

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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.