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Finding the Fourth Proportional to 497.52, 686.40 and 342

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Solution

The fourth proportional to 497.52, 686.40 and 342 is: 471.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    497.52 : 686.40 = 342 : x
  2. Step 2: Convert to fraction form
    497.52/686.40 = 342/x
  3. Step 3: Cross multiply
    497.52x = 686.40 × 342
  4. Step 4: Simplify right side
    497.52x = 234,748.80
  5. Step 5: Solve for x
    x = 234,748.80/497.52
  6. Step 6: Final answer
    x = 471.84

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