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Finding the Fourth Proportional to 741.52, 1,023.20 and 409.95

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Solution

The fourth proportional to 741.52, 1,023.20 and 409.95 is: 565.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    741.52 : 1,023.20 = 409.95 : x
  2. Step 2: Convert to fraction form
    741.52/1,023.20 = 409.95/x
  3. Step 3: Cross multiply
    741.52x = 1,023.20 × 409.95
  4. Step 4: Simplify right side
    741.52x = 419,461.86
  5. Step 5: Solve for x
    x = 419,461.86/741.52
  6. Step 6: Final answer
    x = 565.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.