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Finding the Fourth Proportional to 497.62, 686.66 and 276.54

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Solution

The fourth proportional to 497.62, 686.66 and 276.54 is: 381.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    497.62 : 686.66 = 276.54 : x
  2. Step 2: Convert to fraction form
    497.62/686.66 = 276.54/x
  3. Step 3: Cross multiply
    497.62x = 686.66 × 276.54
  4. Step 4: Simplify right side
    497.62x = 189,888.96
  5. Step 5: Solve for x
    x = 189,888.96/497.62
  6. Step 6: Final answer
    x = 381.59

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