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Finding the Fourth Proportional to 1,505.88, 2,259 and 531.78

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Solution

The fourth proportional to 1,505.88, 2,259 and 531.78 is: 797.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,505.88 : 2,259 = 531.78 : x
  2. Step 2: Convert to fraction form
    1,505.88/2,259 = 531.78/x
  3. Step 3: Cross multiply
    1,505.88x = 2,259 × 531.78
  4. Step 4: Simplify right side
    1,505.88x = 1,201,291.02
  5. Step 5: Solve for x
    x = 1,201,291.02/1,505.88
  6. Step 6: Final answer
    x = 797.73

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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.