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Finding the Fourth Proportional to 1,049.42, 1,573.22 and 400.61

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Solution

The fourth proportional to 1,049.42, 1,573.22 and 400.61 is: 600.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,049.42 : 1,573.22 = 400.61 : x
  2. Step 2: Convert to fraction form
    1,049.42/1,573.22 = 400.61/x
  3. Step 3: Cross multiply
    1,049.42x = 1,573.22 × 400.61
  4. Step 4: Simplify right side
    1,049.42x = 630,252.60
  5. Step 5: Solve for x
    x = 630,252.60/1,049.42
  6. Step 6: Final answer
    x = 600.57

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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.