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Finding the Fourth Proportional to 268.65, 401.03 and 248.61

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Solution

The fourth proportional to 268.65, 401.03 and 248.61 is: 371.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.65 : 401.03 = 248.61 : x
  2. Step 2: Convert to fraction form
    268.65/401.03 = 248.61/x
  3. Step 3: Cross multiply
    268.65x = 401.03 × 248.61
  4. Step 4: Simplify right side
    268.65x = 99,700.07
  5. Step 5: Solve for x
    x = 99,700.07/268.65
  6. Step 6: Final answer
    x = 371.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.