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Finding the Fourth Proportional to 272.47, 375.98 and 154.43

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Solution

The fourth proportional to 272.47, 375.98 and 154.43 is: 213.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.47 : 375.98 = 154.43 : x
  2. Step 2: Convert to fraction form
    272.47/375.98 = 154.43/x
  3. Step 3: Cross multiply
    272.47x = 375.98 × 154.43
  4. Step 4: Simplify right side
    272.47x = 58,062.76
  5. Step 5: Solve for x
    x = 58,062.76/272.47
  6. Step 6: Final answer
    x = 213.10

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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.