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Finding the Fourth Proportional to 395.74, 546.29 and 248.35

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Solution

The fourth proportional to 395.74, 546.29 and 248.35 is: 342.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.74 : 546.29 = 248.35 : x
  2. Step 2: Convert to fraction form
    395.74/546.29 = 248.35/x
  3. Step 3: Cross multiply
    395.74x = 546.29 × 248.35
  4. Step 4: Simplify right side
    395.74x = 135,671.12
  5. Step 5: Solve for x
    x = 135,671.12/395.74
  6. Step 6: Final answer
    x = 342.83

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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.