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Finding the Fourth Proportional to 449.12, 619.84 and 272.14

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Solution

The fourth proportional to 449.12, 619.84 and 272.14 is: 375.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.12 : 619.84 = 272.14 : x
  2. Step 2: Convert to fraction form
    449.12/619.84 = 272.14/x
  3. Step 3: Cross multiply
    449.12x = 619.84 × 272.14
  4. Step 4: Simplify right side
    449.12x = 168,683.26
  5. Step 5: Solve for x
    x = 168,683.26/449.12
  6. Step 6: Final answer
    x = 375.59

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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.