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Finding the Fourth Proportional to 177.10, 245.70 and 168.18

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Solution

The fourth proportional to 177.10, 245.70 and 168.18 is: 233.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.10 : 245.70 = 168.18 : x
  2. Step 2: Convert to fraction form
    177.10/245.70 = 168.18/x
  3. Step 3: Cross multiply
    177.10x = 245.70 × 168.18
  4. Step 4: Simplify right side
    177.10x = 41,321.83
  5. Step 5: Solve for x
    x = 41,321.83/177.10
  6. Step 6: Final answer
    x = 233.32

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.