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Finding the Fourth Proportional to 292.74, 438.96 and 130.56

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Solution

The fourth proportional to 292.74, 438.96 and 130.56 is: 195.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    292.74 : 438.96 = 130.56 : x
  2. Step 2: Convert to fraction form
    292.74/438.96 = 130.56/x
  3. Step 3: Cross multiply
    292.74x = 438.96 × 130.56
  4. Step 4: Simplify right side
    292.74x = 57,310.62
  5. Step 5: Solve for x
    x = 57,310.62/292.74
  6. Step 6: Final answer
    x = 195.77

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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.