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Finding the Fourth Proportional to 1,542.55, 2,313.80 and 372.54

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Solution

The fourth proportional to 1,542.55, 2,313.80 and 372.54 is: 558.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,542.55 : 2,313.80 = 372.54 : x
  2. Step 2: Convert to fraction form
    1,542.55/2,313.80 = 372.54/x
  3. Step 3: Cross multiply
    1,542.55x = 2,313.80 × 372.54
  4. Step 4: Simplify right side
    1,542.55x = 861,989.77
  5. Step 5: Solve for x
    x = 861,989.77/1,542.55
  6. Step 6: Final answer
    x = 558.81

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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.