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Finding the Fourth Proportional to 177, 265.53 and 67.31

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Solution

The fourth proportional to 177, 265.53 and 67.31 is: 100.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    177 : 265.53 = 67.31 : x
  2. Step 2: Convert to fraction form
    177/265.53 = 67.31/x
  3. Step 3: Cross multiply
    177x = 265.53 × 67.31
  4. Step 4: Simplify right side
    177x = 17,872.82
  5. Step 5: Solve for x
    x = 17,872.82/177
  6. Step 6: Final answer
    x = 100.98

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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.