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Finding the Fourth Proportional to 172.92, 237.39 and 153.48

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Solution

The fourth proportional to 172.92, 237.39 and 153.48 is: 210.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    172.92 : 237.39 = 153.48 : x
  2. Step 2: Convert to fraction form
    172.92/237.39 = 153.48/x
  3. Step 3: Cross multiply
    172.92x = 237.39 × 153.48
  4. Step 4: Simplify right side
    172.92x = 36,434.62
  5. Step 5: Solve for x
    x = 36,434.62/172.92
  6. Step 6: Final answer
    x = 210.70

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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.