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Finding the Fourth Proportional to 951.06, 1,312.02 and 557.92

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Solution

The fourth proportional to 951.06, 1,312.02 and 557.92 is: 769.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.06 : 1,312.02 = 557.92 : x
  2. Step 2: Convert to fraction form
    951.06/1,312.02 = 557.92/x
  3. Step 3: Cross multiply
    951.06x = 1,312.02 × 557.92
  4. Step 4: Simplify right side
    951.06x = 732,002.20
  5. Step 5: Solve for x
    x = 732,002.20/951.06
  6. Step 6: Final answer
    x = 769.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.