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Finding the Fourth Proportional to 1,154.76, 1,732.54 and 385.24

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Solution

The fourth proportional to 1,154.76, 1,732.54 and 385.24 is: 577.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,154.76 : 1,732.54 = 385.24 : x
  2. Step 2: Convert to fraction form
    1,154.76/1,732.54 = 385.24/x
  3. Step 3: Cross multiply
    1,154.76x = 1,732.54 × 385.24
  4. Step 4: Simplify right side
    1,154.76x = 667,443.71
  5. Step 5: Solve for x
    x = 667,443.71/1,154.76
  6. Step 6: Final answer
    x = 577.99

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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.