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Finding the Fourth Proportional to 246.85, 340.71 and 159.47

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Solution

The fourth proportional to 246.85, 340.71 and 159.47 is: 220.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.85 : 340.71 = 159.47 : x
  2. Step 2: Convert to fraction form
    246.85/340.71 = 159.47/x
  3. Step 3: Cross multiply
    246.85x = 340.71 × 159.47
  4. Step 4: Simplify right side
    246.85x = 54,332.00
  5. Step 5: Solve for x
    x = 54,332.00/246.85
  6. Step 6: Final answer
    x = 220.10

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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.