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Finding the Fourth Proportional to 379.95, 524.39 and 248.95

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Solution

The fourth proportional to 379.95, 524.39 and 248.95 is: 343.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.95 : 524.39 = 248.95 : x
  2. Step 2: Convert to fraction form
    379.95/524.39 = 248.95/x
  3. Step 3: Cross multiply
    379.95x = 524.39 × 248.95
  4. Step 4: Simplify right side
    379.95x = 130,546.89
  5. Step 5: Solve for x
    x = 130,546.89/379.95
  6. Step 6: Final answer
    x = 343.59

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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.