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Finding the Fourth Proportional to 270.84, 373.79 and 154.43

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Solution

The fourth proportional to 270.84, 373.79 and 154.43 is: 213.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.84 : 373.79 = 154.43 : x
  2. Step 2: Convert to fraction form
    270.84/373.79 = 154.43/x
  3. Step 3: Cross multiply
    270.84x = 373.79 × 154.43
  4. Step 4: Simplify right side
    270.84x = 57,721.75
  5. Step 5: Solve for x
    x = 57,721.75/270.84
  6. Step 6: Final answer
    x = 213.12

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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.