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Finding the Fourth Proportional to 348.10, 521.61 and 226.06

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Solution

The fourth proportional to 348.10, 521.61 and 226.06 is: 338.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.10 : 521.61 = 226.06 : x
  2. Step 2: Convert to fraction form
    348.10/521.61 = 226.06/x
  3. Step 3: Cross multiply
    348.10x = 521.61 × 226.06
  4. Step 4: Simplify right side
    348.10x = 117,915.16
  5. Step 5: Solve for x
    x = 117,915.16/348.10
  6. Step 6: Final answer
    x = 338.74

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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.