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Finding the Fourth Proportional to 348.68, 522.88 and 129.32

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Solution

The fourth proportional to 348.68, 522.88 and 129.32 is: 193.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.68 : 522.88 = 129.32 : x
  2. Step 2: Convert to fraction form
    348.68/522.88 = 129.32/x
  3. Step 3: Cross multiply
    348.68x = 522.88 × 129.32
  4. Step 4: Simplify right side
    348.68x = 67,618.85
  5. Step 5: Solve for x
    x = 67,618.85/348.68
  6. Step 6: Final answer
    x = 193.93

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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.