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Finding the Fourth Proportional to 1,155.62, 1,732.08 and 424.64

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Solution

The fourth proportional to 1,155.62, 1,732.08 and 424.64 is: 636.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,155.62 : 1,732.08 = 424.64 : x
  2. Step 2: Convert to fraction form
    1,155.62/1,732.08 = 424.64/x
  3. Step 3: Cross multiply
    1,155.62x = 1,732.08 × 424.64
  4. Step 4: Simplify right side
    1,155.62x = 735,510.45
  5. Step 5: Solve for x
    x = 735,510.45/1,155.62
  6. Step 6: Final answer
    x = 636.46

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