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Finding the Fourth Proportional to 224.53, 309.80 and 172.13

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Solution

The fourth proportional to 224.53, 309.80 and 172.13 is: 237.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.53 : 309.80 = 172.13 : x
  2. Step 2: Convert to fraction form
    224.53/309.80 = 172.13/x
  3. Step 3: Cross multiply
    224.53x = 309.80 × 172.13
  4. Step 4: Simplify right side
    224.53x = 53,327.08
  5. Step 5: Solve for x
    x = 53,327.08/224.53
  6. Step 6: Final answer
    x = 237.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.