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Finding the Fourth Proportional to 450.29, 674.91 and 172.46

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Solution

The fourth proportional to 450.29, 674.91 and 172.46 is: 258.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.29 : 674.91 = 172.46 : x
  2. Step 2: Convert to fraction form
    450.29/674.91 = 172.46/x
  3. Step 3: Cross multiply
    450.29x = 674.91 × 172.46
  4. Step 4: Simplify right side
    450.29x = 116,395.80
  5. Step 5: Solve for x
    x = 116,395.80/450.29
  6. Step 6: Final answer
    x = 258.49

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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.