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Finding the Fourth Proportional to 348.04, 521.34 and 279.19

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Solution

The fourth proportional to 348.04, 521.34 and 279.19 is: 418.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.04 : 521.34 = 279.19 : x
  2. Step 2: Convert to fraction form
    348.04/521.34 = 279.19/x
  3. Step 3: Cross multiply
    348.04x = 521.34 × 279.19
  4. Step 4: Simplify right side
    348.04x = 145,552.91
  5. Step 5: Solve for x
    x = 145,552.91/348.04
  6. Step 6: Final answer
    x = 418.21

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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.