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Finding the Fourth Proportional to 176.50, 244.57 and 172.72

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Solution

The fourth proportional to 176.50, 244.57 and 172.72 is: 239.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.50 : 244.57 = 172.72 : x
  2. Step 2: Convert to fraction form
    176.50/244.57 = 172.72/x
  3. Step 3: Cross multiply
    176.50x = 244.57 × 172.72
  4. Step 4: Simplify right side
    176.50x = 42,242.13
  5. Step 5: Solve for x
    x = 42,242.13/176.50
  6. Step 6: Final answer
    x = 239.33

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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.