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Finding the Fourth Proportional to 243.75, 337.02 and 212.99

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Solution

The fourth proportional to 243.75, 337.02 and 212.99 is: 294.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.75 : 337.02 = 212.99 : x
  2. Step 2: Convert to fraction form
    243.75/337.02 = 212.99/x
  3. Step 3: Cross multiply
    243.75x = 337.02 × 212.99
  4. Step 4: Simplify right side
    243.75x = 71,781.89
  5. Step 5: Solve for x
    x = 71,781.89/243.75
  6. Step 6: Final answer
    x = 294.49

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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.