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Finding the Fourth Proportional to 172.04, 237.33 and 115.28

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Solution

The fourth proportional to 172.04, 237.33 and 115.28 is: 159.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    172.04 : 237.33 = 115.28 : x
  2. Step 2: Convert to fraction form
    172.04/237.33 = 115.28/x
  3. Step 3: Cross multiply
    172.04x = 237.33 × 115.28
  4. Step 4: Simplify right side
    172.04x = 27,357.78
  5. Step 5: Solve for x
    x = 27,357.78/172.04
  6. Step 6: Final answer
    x = 159.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.