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Finding the Fourth Proportional to 1,057.45, 1,585.08 and 363.55

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Solution

The fourth proportional to 1,057.45, 1,585.08 and 363.55 is: 544.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,057.45 : 1,585.08 = 363.55 : x
  2. Step 2: Convert to fraction form
    1,057.45/1,585.08 = 363.55/x
  3. Step 3: Cross multiply
    1,057.45x = 1,585.08 × 363.55
  4. Step 4: Simplify right side
    1,057.45x = 576,255.83
  5. Step 5: Solve for x
    x = 576,255.83/1,057.45
  6. Step 6: Final answer
    x = 544.95

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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.