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Finding the Fourth Proportional to 448.71, 619.16 and 249.53

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Solution

The fourth proportional to 448.71, 619.16 and 249.53 is: 344.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.71 : 619.16 = 249.53 : x
  2. Step 2: Convert to fraction form
    448.71/619.16 = 249.53/x
  3. Step 3: Cross multiply
    448.71x = 619.16 × 249.53
  4. Step 4: Simplify right side
    448.71x = 154,494.65
  5. Step 5: Solve for x
    x = 154,494.65/448.71
  6. Step 6: Final answer
    x = 344.31

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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.