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Finding the Fourth Proportional to 220.88, 332.60 and 194.15

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Solution

The fourth proportional to 220.88, 332.60 and 194.15 is: 292.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.88 : 332.60 = 194.15 : x
  2. Step 2: Convert to fraction form
    220.88/332.60 = 194.15/x
  3. Step 3: Cross multiply
    220.88x = 332.60 × 194.15
  4. Step 4: Simplify right side
    220.88x = 64,574.29
  5. Step 5: Solve for x
    x = 64,574.29/220.88
  6. Step 6: Final answer
    x = 292.35

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.