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Finding the Fourth Proportional to 348.76, 522.97 and 143.26

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Solution

The fourth proportional to 348.76, 522.97 and 143.26 is: 214.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.76 : 522.97 = 143.26 : x
  2. Step 2: Convert to fraction form
    348.76/522.97 = 143.26/x
  3. Step 3: Cross multiply
    348.76x = 522.97 × 143.26
  4. Step 4: Simplify right side
    348.76x = 74,920.68
  5. Step 5: Solve for x
    x = 74,920.68/348.76
  6. Step 6: Final answer
    x = 214.82

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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.