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Finding the Fourth Proportional to 773.52, 1,159.74 and 388.56

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Solution

The fourth proportional to 773.52, 1,159.74 and 388.56 is: 582.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    773.52 : 1,159.74 = 388.56 : x
  2. Step 2: Convert to fraction form
    773.52/1,159.74 = 388.56/x
  3. Step 3: Cross multiply
    773.52x = 1,159.74 × 388.56
  4. Step 4: Simplify right side
    773.52x = 450,628.57
  5. Step 5: Solve for x
    x = 450,628.57/773.52
  6. Step 6: Final answer
    x = 582.57

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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.