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Finding the Fourth Proportional to 1,452.96, 2,178.75 and 527.86

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Solution

The fourth proportional to 1,452.96, 2,178.75 and 527.86 is: 791.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,452.96 : 2,178.75 = 527.86 : x
  2. Step 2: Convert to fraction form
    1,452.96/2,178.75 = 527.86/x
  3. Step 3: Cross multiply
    1,452.96x = 2,178.75 × 527.86
  4. Step 4: Simplify right side
    1,452.96x = 1,150,073.66
  5. Step 5: Solve for x
    x = 1,150,073.66/1,452.96
  6. Step 6: Final answer
    x = 791.54

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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.