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Finding the Fourth Proportional to 951.91, 1,423.19 and 807.28

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Solution

The fourth proportional to 951.91, 1,423.19 and 807.28 is: 1,206.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.91 : 1,423.19 = 807.28 : x
  2. Step 2: Convert to fraction form
    951.91/1,423.19 = 807.28/x
  3. Step 3: Cross multiply
    951.91x = 1,423.19 × 807.28
  4. Step 4: Simplify right side
    951.91x = 1,148,911.28
  5. Step 5: Solve for x
    x = 1,148,911.28/951.91
  6. Step 6: Final answer
    x = 1,206.96

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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.