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Finding the Fourth Proportional to 178.71, 244.83 and 172.55

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Solution

The fourth proportional to 178.71, 244.83 and 172.55 is: 236.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    178.71 : 244.83 = 172.55 : x
  2. Step 2: Convert to fraction form
    178.71/244.83 = 172.55/x
  3. Step 3: Cross multiply
    178.71x = 244.83 × 172.55
  4. Step 4: Simplify right side
    178.71x = 42,244.19
  5. Step 5: Solve for x
    x = 42,244.19/178.71
  6. Step 6: Final answer
    x = 236.38

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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.