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Finding the Fourth Proportional to 177.56, 245.05 and 118.45

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Solution

The fourth proportional to 177.56, 245.05 and 118.45 is: 163.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.56 : 245.05 = 118.45 : x
  2. Step 2: Convert to fraction form
    177.56/245.05 = 118.45/x
  3. Step 3: Cross multiply
    177.56x = 245.05 × 118.45
  4. Step 4: Simplify right side
    177.56x = 29,026.17
  5. Step 5: Solve for x
    x = 29,026.17/177.56
  6. Step 6: Final answer
    x = 163.47

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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.