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Finding the Fourth Proportional to 272.93, 376.70 and 154.92

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Solution

The fourth proportional to 272.93, 376.70 and 154.92 is: 213.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.93 : 376.70 = 154.92 : x
  2. Step 2: Convert to fraction form
    272.93/376.70 = 154.92/x
  3. Step 3: Cross multiply
    272.93x = 376.70 × 154.92
  4. Step 4: Simplify right side
    272.93x = 58,357.59
  5. Step 5: Solve for x
    x = 58,357.59/272.93
  6. Step 6: Final answer
    x = 213.82

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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.