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Finding the Fourth Proportional to 220.02, 328.48 and 168.39

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Solution

The fourth proportional to 220.02, 328.48 and 168.39 is: 251.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.02 : 328.48 = 168.39 : x
  2. Step 2: Convert to fraction form
    220.02/328.48 = 168.39/x
  3. Step 3: Cross multiply
    220.02x = 328.48 × 168.39
  4. Step 4: Simplify right side
    220.02x = 55,312.75
  5. Step 5: Solve for x
    x = 55,312.75/220.02
  6. Step 6: Final answer
    x = 251.40

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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.