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Finding the Fourth Proportional to 1,553.87, 2,330.05 and 457.94

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Solution

The fourth proportional to 1,553.87, 2,330.05 and 457.94 is: 686.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553.87 : 2,330.05 = 457.94 : x
  2. Step 2: Convert to fraction form
    1,553.87/2,330.05 = 457.94/x
  3. Step 3: Cross multiply
    1,553.87x = 2,330.05 × 457.94
  4. Step 4: Simplify right side
    1,553.87x = 1,067,023.10
  5. Step 5: Solve for x
    x = 1,067,023.10/1,553.87
  6. Step 6: Final answer
    x = 686.69

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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.