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Finding the Fourth Proportional to 1,508.51, 2,262.78 and 728.33

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Solution

The fourth proportional to 1,508.51, 2,262.78 and 728.33 is: 1,092.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,508.51 : 2,262.78 = 728.33 : x
  2. Step 2: Convert to fraction form
    1,508.51/2,262.78 = 728.33/x
  3. Step 3: Cross multiply
    1,508.51x = 2,262.78 × 728.33
  4. Step 4: Simplify right side
    1,508.51x = 1,648,050.56
  5. Step 5: Solve for x
    x = 1,648,050.56/1,508.51
  6. Step 6: Final answer
    x = 1,092.50

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1.5x scale

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.