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Finding the Fourth Proportional to 174.12, 240.48 and 135.60

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Solution

The fourth proportional to 174.12, 240.48 and 135.60 is: 187.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    174.12 : 240.48 = 135.60 : x
  2. Step 2: Convert to fraction form
    174.12/240.48 = 135.60/x
  3. Step 3: Cross multiply
    174.12x = 240.48 × 135.60
  4. Step 4: Simplify right side
    174.12x = 32,609.09
  5. Step 5: Solve for x
    x = 32,609.09/174.12
  6. Step 6: Final answer
    x = 187.28

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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.