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Finding the Fourth Proportional to 220.68, 331.04 and 58.36

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Solution

The fourth proportional to 220.68, 331.04 and 58.36 is: 87.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.68 : 331.04 = 58.36 : x
  2. Step 2: Convert to fraction form
    220.68/331.04 = 58.36/x
  3. Step 3: Cross multiply
    220.68x = 331.04 × 58.36
  4. Step 4: Simplify right side
    220.68x = 19,319.11
  5. Step 5: Solve for x
    x = 19,319.11/220.68
  6. Step 6: Final answer
    x = 87.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.