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Finding the Fourth Proportional to 176.80, 265.32 and 131.20

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Solution

The fourth proportional to 176.80, 265.32 and 131.20 is: 196.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.80 : 265.32 = 131.20 : x
  2. Step 2: Convert to fraction form
    176.80/265.32 = 131.20/x
  3. Step 3: Cross multiply
    176.80x = 265.32 × 131.20
  4. Step 4: Simplify right side
    176.80x = 34,809.98
  5. Step 5: Solve for x
    x = 34,809.98/176.80
  6. Step 6: Final answer
    x = 196.89

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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.