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Finding the Fourth Proportional to 235.76, 325.40 and 136.24

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Solution

The fourth proportional to 235.76, 325.40 and 136.24 is: 188.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.76 : 325.40 = 136.24 : x
  2. Step 2: Convert to fraction form
    235.76/325.40 = 136.24/x
  3. Step 3: Cross multiply
    235.76x = 325.40 × 136.24
  4. Step 4: Simplify right side
    235.76x = 44,332.68
  5. Step 5: Solve for x
    x = 44,332.68/235.76
  6. Step 6: Final answer
    x = 188.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.