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Finding the Fourth Proportional to 172.32, 236.54 and 170.29

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Solution

The fourth proportional to 172.32, 236.54 and 170.29 is: 233.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    172.32 : 236.54 = 170.29 : x
  2. Step 2: Convert to fraction form
    172.32/236.54 = 170.29/x
  3. Step 3: Cross multiply
    172.32x = 236.54 × 170.29
  4. Step 4: Simplify right side
    172.32x = 40,280.40
  5. Step 5: Solve for x
    x = 40,280.40/172.32
  6. Step 6: Final answer
    x = 233.75

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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.