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Finding the Fourth Proportional to 282, 422.91 and 99.42

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Solution

The fourth proportional to 282, 422.91 and 99.42 is: 149.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    282 : 422.91 = 99.42 : x
  2. Step 2: Convert to fraction form
    282/422.91 = 99.42/x
  3. Step 3: Cross multiply
    282x = 422.91 × 99.42
  4. Step 4: Simplify right side
    282x = 42,045.71
  5. Step 5: Solve for x
    x = 42,045.71/282
  6. Step 6: Final answer
    x = 149.10

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