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Finding the Fourth Proportional to 220.90, 332.16 and 167.02

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Solution

The fourth proportional to 220.90, 332.16 and 167.02 is: 251.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.90 : 332.16 = 167.02 : x
  2. Step 2: Convert to fraction form
    220.90/332.16 = 167.02/x
  3. Step 3: Cross multiply
    220.90x = 332.16 × 167.02
  4. Step 4: Simplify right side
    220.90x = 55,477.36
  5. Step 5: Solve for x
    x = 55,477.36/220.90
  6. Step 6: Final answer
    x = 251.14

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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.