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Finding the Fourth Proportional to 1,049.72, 1,573.68 and 433.04

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Solution

The fourth proportional to 1,049.72, 1,573.68 and 433.04 is: 649.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,049.72 : 1,573.68 = 433.04 : x
  2. Step 2: Convert to fraction form
    1,049.72/1,573.68 = 433.04/x
  3. Step 3: Cross multiply
    1,049.72x = 1,573.68 × 433.04
  4. Step 4: Simplify right side
    1,049.72x = 681,458.52
  5. Step 5: Solve for x
    x = 681,458.52/1,049.72
  6. Step 6: Final answer
    x = 649.18

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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.