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Finding the Fourth Proportional to 248.07, 341.67 and 215.31

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Solution

The fourth proportional to 248.07, 341.67 and 215.31 is: 296.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.07 : 341.67 = 215.31 : x
  2. Step 2: Convert to fraction form
    248.07/341.67 = 215.31/x
  3. Step 3: Cross multiply
    248.07x = 341.67 × 215.31
  4. Step 4: Simplify right side
    248.07x = 73,564.97
  5. Step 5: Solve for x
    x = 73,564.97/248.07
  6. Step 6: Final answer
    x = 296.55

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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.