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Finding the Fourth Proportional to 1,593.61, 2,391.41 and 772.76

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Solution

The fourth proportional to 1,593.61, 2,391.41 and 772.76 is: 1,159.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,593.61 : 2,391.41 = 772.76 : x
  2. Step 2: Convert to fraction form
    1,593.61/2,391.41 = 772.76/x
  3. Step 3: Cross multiply
    1,593.61x = 2,391.41 × 772.76
  4. Step 4: Simplify right side
    1,593.61x = 1,847,993.90
  5. Step 5: Solve for x
    x = 1,847,993.90/1,593.61
  6. Step 6: Final answer
    x = 1,159.63

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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.