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Finding the Fourth Proportional to 177.66, 244.15 and 172.80

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Solution

The fourth proportional to 177.66, 244.15 and 172.80 is: 237.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.66 : 244.15 = 172.80 : x
  2. Step 2: Convert to fraction form
    177.66/244.15 = 172.80/x
  3. Step 3: Cross multiply
    177.66x = 244.15 × 172.80
  4. Step 4: Simplify right side
    177.66x = 42,188.69
  5. Step 5: Solve for x
    x = 42,188.69/177.66
  6. Step 6: Final answer
    x = 237.47

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.