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Finding the Fourth Proportional to 457.48, 632.73 and 408.30

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Solution

The fourth proportional to 457.48, 632.73 and 408.30 is: 564.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    457.48 : 632.73 = 408.30 : x
  2. Step 2: Convert to fraction form
    457.48/632.73 = 408.30/x
  3. Step 3: Cross multiply
    457.48x = 632.73 × 408.30
  4. Step 4: Simplify right side
    457.48x = 258,343.66
  5. Step 5: Solve for x
    x = 258,343.66/457.48
  6. Step 6: Final answer
    x = 564.71

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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.