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Finding the Fourth Proportional to 537.34, 805.90 and 172.03

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Solution

The fourth proportional to 537.34, 805.90 and 172.03 is: 258.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    537.34 : 805.90 = 172.03 : x
  2. Step 2: Convert to fraction form
    537.34/805.90 = 172.03/x
  3. Step 3: Cross multiply
    537.34x = 805.90 × 172.03
  4. Step 4: Simplify right side
    537.34x = 138,640.63
  5. Step 5: Solve for x
    x = 138,640.63/537.34
  6. Step 6: Final answer
    x = 258.01

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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.