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Finding the Fourth Proportional to 175.08, 261.15 and 172.38

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Solution

The fourth proportional to 175.08, 261.15 and 172.38 is: 257.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    175.08 : 261.15 = 172.38 : x
  2. Step 2: Convert to fraction form
    175.08/261.15 = 172.38/x
  3. Step 3: Cross multiply
    175.08x = 261.15 × 172.38
  4. Step 4: Simplify right side
    175.08x = 45,017.04
  5. Step 5: Solve for x
    x = 45,017.04/175.08
  6. Step 6: Final answer
    x = 257.12

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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.