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Finding the Fourth Proportional to 526.47, 726.20 and 327.40

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Solution

The fourth proportional to 526.47, 726.20 and 327.40 is: 451.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.47 : 726.20 = 327.40 : x
  2. Step 2: Convert to fraction form
    526.47/726.20 = 327.40/x
  3. Step 3: Cross multiply
    526.47x = 726.20 × 327.40
  4. Step 4: Simplify right side
    526.47x = 237,755.66
  5. Step 5: Solve for x
    x = 237,755.66/526.47
  6. Step 6: Final answer
    x = 451.61

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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.