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Finding the Fourth Proportional to 527.60, 726.44 and 448.75

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Solution

The fourth proportional to 527.60, 726.44 and 448.75 is: 617.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.60 : 726.44 = 448.75 : x
  2. Step 2: Convert to fraction form
    527.60/726.44 = 448.75/x
  3. Step 3: Cross multiply
    527.60x = 726.44 × 448.75
  4. Step 4: Simplify right side
    527.60x = 325,989.95
  5. Step 5: Solve for x
    x = 325,989.95/527.60
  6. Step 6: Final answer
    x = 617.87

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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.