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Finding the Fourth Proportional to 1,648.48, 2,472.97 and 478.33

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Solution

The fourth proportional to 1,648.48, 2,472.97 and 478.33 is: 717.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,648.48 : 2,472.97 = 478.33 : x
  2. Step 2: Convert to fraction form
    1,648.48/2,472.97 = 478.33/x
  3. Step 3: Cross multiply
    1,648.48x = 2,472.97 × 478.33
  4. Step 4: Simplify right side
    1,648.48x = 1,182,902.39
  5. Step 5: Solve for x
    x = 1,182,902.39/1,648.48
  6. Step 6: Final answer
    x = 717.57

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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.