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Finding the Fourth Proportional to 953.05, 1,315.23 and 579.97

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Solution

The fourth proportional to 953.05, 1,315.23 and 579.97 is: 800.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    953.05 : 1,315.23 = 579.97 : x
  2. Step 2: Convert to fraction form
    953.05/1,315.23 = 579.97/x
  3. Step 3: Cross multiply
    953.05x = 1,315.23 × 579.97
  4. Step 4: Simplify right side
    953.05x = 762,793.94
  5. Step 5: Solve for x
    x = 762,793.94/953.05
  6. Step 6: Final answer
    x = 800.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.