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Finding the Fourth Proportional to 456.58, 625.97 and 448.39

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Solution

The fourth proportional to 456.58, 625.97 and 448.39 is: 614.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.58 : 625.97 = 448.39 : x
  2. Step 2: Convert to fraction form
    456.58/625.97 = 448.39/x
  3. Step 3: Cross multiply
    456.58x = 625.97 × 448.39
  4. Step 4: Simplify right side
    456.58x = 280,678.69
  5. Step 5: Solve for x
    x = 280,678.69/456.58
  6. Step 6: Final answer
    x = 614.74

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.