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Finding the Fourth Proportional to 527.39, 727.46 and 330.86

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Solution

The fourth proportional to 527.39, 727.46 and 330.86 is: 456.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.39 : 727.46 = 330.86 : x
  2. Step 2: Convert to fraction form
    527.39/727.46 = 330.86/x
  3. Step 3: Cross multiply
    527.39x = 727.46 × 330.86
  4. Step 4: Simplify right side
    527.39x = 240,682.12
  5. Step 5: Solve for x
    x = 240,682.12/527.39
  6. Step 6: Final answer
    x = 456.37

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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.