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Finding the Fourth Proportional to 1,599.89, 2,399.53 and 545.75

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Solution

The fourth proportional to 1,599.89, 2,399.53 and 545.75 is: 818.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,599.89 : 2,399.53 = 545.75 : x
  2. Step 2: Convert to fraction form
    1,599.89/2,399.53 = 545.75/x
  3. Step 3: Cross multiply
    1,599.89x = 2,399.53 × 545.75
  4. Step 4: Simplify right side
    1,599.89x = 1,309,540.77
  5. Step 5: Solve for x
    x = 1,309,540.77/1,599.89
  6. Step 6: Final answer
    x = 818.52

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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.