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Finding the Fourth Proportional to 174.61, 240.78 and 119.31

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Solution

The fourth proportional to 174.61, 240.78 and 119.31 is: 164.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    174.61 : 240.78 = 119.31 : x
  2. Step 2: Convert to fraction form
    174.61/240.78 = 119.31/x
  3. Step 3: Cross multiply
    174.61x = 240.78 × 119.31
  4. Step 4: Simplify right side
    174.61x = 28,727.46
  5. Step 5: Solve for x
    x = 28,727.46/174.61
  6. Step 6: Final answer
    x = 164.52

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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.