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Finding the Fourth Proportional to 457.43, 631.29 and 260.95

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Solution

The fourth proportional to 457.43, 631.29 and 260.95 is: 360.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    457.43 : 631.29 = 260.95 : x
  2. Step 2: Convert to fraction form
    457.43/631.29 = 260.95/x
  3. Step 3: Cross multiply
    457.43x = 631.29 × 260.95
  4. Step 4: Simplify right side
    457.43x = 164,733.82
  5. Step 5: Solve for x
    x = 164,733.82/457.43
  6. Step 6: Final answer
    x = 360.13

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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.