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Finding the Fourth Proportional to 457.18, 679.94 and 452.32

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Solution

The fourth proportional to 457.18, 679.94 and 452.32 is: 672.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    457.18 : 679.94 = 452.32 : x
  2. Step 2: Convert to fraction form
    457.18/679.94 = 452.32/x
  3. Step 3: Cross multiply
    457.18x = 679.94 × 452.32
  4. Step 4: Simplify right side
    457.18x = 307,550.46
  5. Step 5: Solve for x
    x = 307,550.46/457.18
  6. Step 6: Final answer
    x = 672.71

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.