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Finding the Fourth Proportional to 459.97, 689.95 and 135.34

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Solution

The fourth proportional to 459.97, 689.95 and 135.34 is: 203.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    459.97 : 689.95 = 135.34 : x
  2. Step 2: Convert to fraction form
    459.97/689.95 = 135.34/x
  3. Step 3: Cross multiply
    459.97x = 689.95 × 135.34
  4. Step 4: Simplify right side
    459.97x = 93,376.28
  5. Step 5: Solve for x
    x = 93,376.28/459.97
  6. Step 6: Final answer
    x = 203.01

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