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Finding the Fourth Proportional to 501.78, 752.60 and 136.58

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Solution

The fourth proportional to 501.78, 752.60 and 136.58 is: 204.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.78 : 752.60 = 136.58 : x
  2. Step 2: Convert to fraction form
    501.78/752.60 = 136.58/x
  3. Step 3: Cross multiply
    501.78x = 752.60 × 136.58
  4. Step 4: Simplify right side
    501.78x = 102,790.11
  5. Step 5: Solve for x
    x = 102,790.11/501.78
  6. Step 6: Final answer
    x = 204.85

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