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Finding the Fourth Proportional to 457.90, 632.01 and 261.53

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Solution

The fourth proportional to 457.90, 632.01 and 261.53 is: 360.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    457.90 : 632.01 = 261.53 : x
  2. Step 2: Convert to fraction form
    457.90/632.01 = 261.53/x
  3. Step 3: Cross multiply
    457.90x = 632.01 × 261.53
  4. Step 4: Simplify right side
    457.90x = 165,287.40
  5. Step 5: Solve for x
    x = 165,287.40/457.90
  6. Step 6: Final answer
    x = 360.97

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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.