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Finding the Fourth Proportional to 298.01, 411.28 and 173.75

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Solution

The fourth proportional to 298.01, 411.28 and 173.75 is: 239.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.01 : 411.28 = 173.75 : x
  2. Step 2: Convert to fraction form
    298.01/411.28 = 173.75/x
  3. Step 3: Cross multiply
    298.01x = 411.28 × 173.75
  4. Step 4: Simplify right side
    298.01x = 71,457.41
  5. Step 5: Solve for x
    x = 71,457.41/298.01
  6. Step 6: Final answer
    x = 239.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.