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Finding the Fourth Proportional to 349.34, 482.15 and 225.15

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Solution

The fourth proportional to 349.34, 482.15 and 225.15 is: 310.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.34 : 482.15 = 225.15 : x
  2. Step 2: Convert to fraction form
    349.34/482.15 = 225.15/x
  3. Step 3: Cross multiply
    349.34x = 482.15 × 225.15
  4. Step 4: Simplify right side
    349.34x = 108,554.95
  5. Step 5: Solve for x
    x = 108,554.95/349.34
  6. Step 6: Final answer
    x = 310.75

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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.