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Finding the Fourth Proportional to 348.25, 521.69 and 238.55

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Solution

The fourth proportional to 348.25, 521.69 and 238.55 is: 357.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.25 : 521.69 = 238.55 : x
  2. Step 2: Convert to fraction form
    348.25/521.69 = 238.55/x
  3. Step 3: Cross multiply
    348.25x = 521.69 × 238.55
  4. Step 4: Simplify right side
    348.25x = 124,446.69
  5. Step 5: Solve for x
    x = 124,446.69/348.25
  6. Step 6: Final answer
    x = 357.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.