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Finding the Fourth Proportional to 951.36, 1,424.16 and 672.72

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Solution

The fourth proportional to 951.36, 1,424.16 and 672.72 is: 1,007.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.36 : 1,424.16 = 672.72 : x
  2. Step 2: Convert to fraction form
    951.36/1,424.16 = 672.72/x
  3. Step 3: Cross multiply
    951.36x = 1,424.16 × 672.72
  4. Step 4: Simplify right side
    951.36x = 958,060.92
  5. Step 5: Solve for x
    x = 958,060.92/951.36
  6. Step 6: Final answer
    x = 1,007.04

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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.