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Finding the Fourth Proportional to 348.04, 521.92 and 142.60

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Solution

The fourth proportional to 348.04, 521.92 and 142.60 is: 213.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.04 : 521.92 = 142.60 : x
  2. Step 2: Convert to fraction form
    348.04/521.92 = 142.60/x
  3. Step 3: Cross multiply
    348.04x = 521.92 × 142.60
  4. Step 4: Simplify right side
    348.04x = 74,425.79
  5. Step 5: Solve for x
    x = 74,425.79/348.04
  6. Step 6: Final answer
    x = 213.84

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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.