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Finding the Fourth Proportional to 1,169.47, 1,754.27 and 475.78

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Solution

The fourth proportional to 1,169.47, 1,754.27 and 475.78 is: 713.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,169.47 : 1,754.27 = 475.78 : x
  2. Step 2: Convert to fraction form
    1,169.47/1,754.27 = 475.78/x
  3. Step 3: Cross multiply
    1,169.47x = 1,754.27 × 475.78
  4. Step 4: Simplify right side
    1,169.47x = 834,646.58
  5. Step 5: Solve for x
    x = 834,646.58/1,169.47
  6. Step 6: Final answer
    x = 713.70

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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.