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Finding the Fourth Proportional to 247.62, 341.65 and 154.37

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Solution

The fourth proportional to 247.62, 341.65 and 154.37 is: 212.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.62 : 341.65 = 154.37 : x
  2. Step 2: Convert to fraction form
    247.62/341.65 = 154.37/x
  3. Step 3: Cross multiply
    247.62x = 341.65 × 154.37
  4. Step 4: Simplify right side
    247.62x = 52,741.56
  5. Step 5: Solve for x
    x = 52,741.56/247.62
  6. Step 6: Final answer
    x = 212.99

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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.