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Finding the Fourth Proportional to 220.32, 329.36 and 174.15

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Solution

The fourth proportional to 220.32, 329.36 and 174.15 is: 260.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.32 : 329.36 = 174.15 : x
  2. Step 2: Convert to fraction form
    220.32/329.36 = 174.15/x
  3. Step 3: Cross multiply
    220.32x = 329.36 × 174.15
  4. Step 4: Simplify right side
    220.32x = 57,357.17
  5. Step 5: Solve for x
    x = 57,357.17/220.32
  6. Step 6: Final answer
    x = 260.34

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.