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Finding the Fourth Proportional to 951.48, 1,428.03 and 708.48

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Solution

The fourth proportional to 951.48, 1,428.03 and 708.48 is: 1,063.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.48 : 1,428.03 = 708.48 : x
  2. Step 2: Convert to fraction form
    951.48/1,428.03 = 708.48/x
  3. Step 3: Cross multiply
    951.48x = 1,428.03 × 708.48
  4. Step 4: Simplify right side
    951.48x = 1,011,730.69
  5. Step 5: Solve for x
    x = 1,011,730.69/951.48
  6. Step 6: Final answer
    x = 1,063.32

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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.