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Finding the Fourth Proportional to 1,057.47, 1,585.74 and 363.96

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Solution

The fourth proportional to 1,057.47, 1,585.74 and 363.96 is: 545.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,057.47 : 1,585.74 = 363.96 : x
  2. Step 2: Convert to fraction form
    1,057.47/1,585.74 = 363.96/x
  3. Step 3: Cross multiply
    1,057.47x = 1,585.74 × 363.96
  4. Step 4: Simplify right side
    1,057.47x = 577,145.93
  5. Step 5: Solve for x
    x = 577,145.93/1,057.47
  6. Step 6: Final answer
    x = 545.78

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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.