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Finding the Fourth Proportional to 1,648.25, 2,472.54 and 552.69

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Solution

The fourth proportional to 1,648.25, 2,472.54 and 552.69 is: 829.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,648.25 : 2,472.54 = 552.69 : x
  2. Step 2: Convert to fraction form
    1,648.25/2,472.54 = 552.69/x
  3. Step 3: Cross multiply
    1,648.25x = 2,472.54 × 552.69
  4. Step 4: Simplify right side
    1,648.25x = 1,366,548.13
  5. Step 5: Solve for x
    x = 1,366,548.13/1,648.25
  6. Step 6: Final answer
    x = 829.09

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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.