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Finding the Fourth Proportional to 246.92, 340.70 and 153.68

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Solution

The fourth proportional to 246.92, 340.70 and 153.68 is: 212.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.92 : 340.70 = 153.68 : x
  2. Step 2: Convert to fraction form
    246.92/340.70 = 153.68/x
  3. Step 3: Cross multiply
    246.92x = 340.70 × 153.68
  4. Step 4: Simplify right side
    246.92x = 52,358.78
  5. Step 5: Solve for x
    x = 52,358.78/246.92
  6. Step 6: Final answer
    x = 212.05

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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.