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Finding the Fourth Proportional to 172.73, 257.51 and 159.03

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Solution

The fourth proportional to 172.73, 257.51 and 159.03 is: 237.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    172.73 : 257.51 = 159.03 : x
  2. Step 2: Convert to fraction form
    172.73/257.51 = 159.03/x
  3. Step 3: Cross multiply
    172.73x = 257.51 × 159.03
  4. Step 4: Simplify right side
    172.73x = 40,952.21
  5. Step 5: Solve for x
    x = 40,952.21/172.73
  6. Step 6: Final answer
    x = 237.08

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.