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Finding the Fourth Proportional to 527.92, 727.86 and 387.76

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Solution

The fourth proportional to 527.92, 727.86 and 387.76 is: 534.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.92 : 727.86 = 387.76 : x
  2. Step 2: Convert to fraction form
    527.92/727.86 = 387.76/x
  3. Step 3: Cross multiply
    527.92x = 727.86 × 387.76
  4. Step 4: Simplify right side
    527.92x = 282,234.99
  5. Step 5: Solve for x
    x = 282,234.99/527.92
  6. Step 6: Final answer
    x = 534.62

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