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Finding the Fourth Proportional to 270.91, 373.85 and 154.47

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Solution

The fourth proportional to 270.91, 373.85 and 154.47 is: 213.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.91 : 373.85 = 154.47 : x
  2. Step 2: Convert to fraction form
    270.91/373.85 = 154.47/x
  3. Step 3: Cross multiply
    270.91x = 373.85 × 154.47
  4. Step 4: Simplify right side
    270.91x = 57,748.77
  5. Step 5: Solve for x
    x = 57,748.77/270.91
  6. Step 6: Final answer
    x = 213.17

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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.