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Finding the Fourth Proportional to 192.96, 266.16 and 130.65

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Solution

The fourth proportional to 192.96, 266.16 and 130.65 is: 180.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.96 : 266.16 = 130.65 : x
  2. Step 2: Convert to fraction form
    192.96/266.16 = 130.65/x
  3. Step 3: Cross multiply
    192.96x = 266.16 × 130.65
  4. Step 4: Simplify right side
    192.96x = 34,773.80
  5. Step 5: Solve for x
    x = 34,773.80/192.96
  6. Step 6: Final answer
    x = 180.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.