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Finding the Fourth Proportional to 1,169.76, 1,753.42 and 476.15

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Solution

The fourth proportional to 1,169.76, 1,753.42 and 476.15 is: 713.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,169.76 : 1,753.42 = 476.15 : x
  2. Step 2: Convert to fraction form
    1,169.76/1,753.42 = 476.15/x
  3. Step 3: Cross multiply
    1,169.76x = 1,753.42 × 476.15
  4. Step 4: Simplify right side
    1,169.76x = 834,890.93
  5. Step 5: Solve for x
    x = 834,890.93/1,169.76
  6. Step 6: Final answer
    x = 713.73

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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.