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Finding the Fourth Proportional to 398.53, 597.58 and 124.55

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Solution

The fourth proportional to 398.53, 597.58 and 124.55 is: 186.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.53 : 597.58 = 124.55 : x
  2. Step 2: Convert to fraction form
    398.53/597.58 = 124.55/x
  3. Step 3: Cross multiply
    398.53x = 597.58 × 124.55
  4. Step 4: Simplify right side
    398.53x = 74,425.60
  5. Step 5: Solve for x
    x = 74,425.60/398.53
  6. Step 6: Final answer
    x = 186.75

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