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Finding the Fourth Proportional to 457.08, 631.02 and 340.92

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Solution

The fourth proportional to 457.08, 631.02 and 340.92 is: 470.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    457.08 : 631.02 = 340.92 : x
  2. Step 2: Convert to fraction form
    457.08/631.02 = 340.92/x
  3. Step 3: Cross multiply
    457.08x = 631.02 × 340.92
  4. Step 4: Simplify right side
    457.08x = 215,127.34
  5. Step 5: Solve for x
    x = 215,127.34/457.08
  6. Step 6: Final answer
    x = 470.66

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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.