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Finding the Fourth Proportional to 527.30, 727.90 and 330.93

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Solution

The fourth proportional to 527.30, 727.90 and 330.93 is: 456.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.30 : 727.90 = 330.93 : x
  2. Step 2: Convert to fraction form
    527.30/727.90 = 330.93/x
  3. Step 3: Cross multiply
    527.30x = 727.90 × 330.93
  4. Step 4: Simplify right side
    527.30x = 240,883.95
  5. Step 5: Solve for x
    x = 240,883.95/527.30
  6. Step 6: Final answer
    x = 456.83

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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.