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Finding the Fourth Proportional to 537.26, 805.89 and 172.08

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Solution

The fourth proportional to 537.26, 805.89 and 172.08 is: 258.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    537.26 : 805.89 = 172.08 : x
  2. Step 2: Convert to fraction form
    537.26/805.89 = 172.08/x
  3. Step 3: Cross multiply
    537.26x = 805.89 × 172.08
  4. Step 4: Simplify right side
    537.26x = 138,672.66
  5. Step 5: Solve for x
    x = 138,672.66/537.26
  6. Step 6: Final answer
    x = 258.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.