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Finding the Fourth Proportional to 1,255.68, 1,881.90 and 524.26

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Solution

The fourth proportional to 1,255.68, 1,881.90 and 524.26 is: 785.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,255.68 : 1,881.90 = 524.26 : x
  2. Step 2: Convert to fraction form
    1,255.68/1,881.90 = 524.26/x
  3. Step 3: Cross multiply
    1,255.68x = 1,881.90 × 524.26
  4. Step 4: Simplify right side
    1,255.68x = 986,604.89
  5. Step 5: Solve for x
    x = 986,604.89/1,255.68
  6. Step 6: Final answer
    x = 785.71

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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.