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Finding the Fourth Proportional to 1,528.50, 2,293.02 and 759

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Solution

The fourth proportional to 1,528.50, 2,293.02 and 759 is: 1,138.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528.50 : 2,293.02 = 759 : x
  2. Step 2: Convert to fraction form
    1,528.50/2,293.02 = 759/x
  3. Step 3: Cross multiply
    1,528.50x = 2,293.02 × 759
  4. Step 4: Simplify right side
    1,528.50x = 1,740,402.18
  5. Step 5: Solve for x
    x = 1,740,402.18/1,528.50
  6. Step 6: Final answer
    x = 1,138.63

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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.