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Finding the Fourth Proportional to 459.36, 688.68 and 170.76

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Solution

The fourth proportional to 459.36, 688.68 and 170.76 is: 256.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    459.36 : 688.68 = 170.76 : x
  2. Step 2: Convert to fraction form
    459.36/688.68 = 170.76/x
  3. Step 3: Cross multiply
    459.36x = 688.68 × 170.76
  4. Step 4: Simplify right side
    459.36x = 117,599.00
  5. Step 5: Solve for x
    x = 117,599.00/459.36
  6. Step 6: Final answer
    x = 256.01

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