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Finding the Fourth Proportional to 246.72, 340.80 and 217.52

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Solution

The fourth proportional to 246.72, 340.80 and 217.52 is: 300.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.72 : 340.80 = 217.52 : x
  2. Step 2: Convert to fraction form
    246.72/340.80 = 217.52/x
  3. Step 3: Cross multiply
    246.72x = 340.80 × 217.52
  4. Step 4: Simplify right side
    246.72x = 74,130.82
  5. Step 5: Solve for x
    x = 74,130.82/246.72
  6. Step 6: Final answer
    x = 300.47

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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.