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Finding the Fourth Proportional to 292.76, 439.19 and 130.44

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Solution

The fourth proportional to 292.76, 439.19 and 130.44 is: 195.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    292.76 : 439.19 = 130.44 : x
  2. Step 2: Convert to fraction form
    292.76/439.19 = 130.44/x
  3. Step 3: Cross multiply
    292.76x = 439.19 × 130.44
  4. Step 4: Simplify right side
    292.76x = 57,287.94
  5. Step 5: Solve for x
    x = 57,287.94/292.76
  6. Step 6: Final answer
    x = 195.68

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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.