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Finding the Fourth Proportional to 246.95, 340.69 and 215.87

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Solution

The fourth proportional to 246.95, 340.69 and 215.87 is: 297.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.95 : 340.69 = 215.87 : x
  2. Step 2: Convert to fraction form
    246.95/340.69 = 215.87/x
  3. Step 3: Cross multiply
    246.95x = 340.69 × 215.87
  4. Step 4: Simplify right side
    246.95x = 73,542.91
  5. Step 5: Solve for x
    x = 73,542.91/246.95
  6. Step 6: Final answer
    x = 297.81

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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.