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Finding the Fourth Proportional to 348.42, 522.61 and 104.91

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Solution

The fourth proportional to 348.42, 522.61 and 104.91 is: 157.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.42 : 522.61 = 104.91 : x
  2. Step 2: Convert to fraction form
    348.42/522.61 = 104.91/x
  3. Step 3: Cross multiply
    348.42x = 522.61 × 104.91
  4. Step 4: Simplify right side
    348.42x = 54,826.75
  5. Step 5: Solve for x
    x = 54,826.75/348.42
  6. Step 6: Final answer
    x = 157.36

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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.