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Finding the Fourth Proportional to 1,049.75, 1,574.61 and 400.32

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Solution

The fourth proportional to 1,049.75, 1,574.61 and 400.32 is: 600.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,049.75 : 1,574.61 = 400.32 : x
  2. Step 2: Convert to fraction form
    1,049.75/1,574.61 = 400.32/x
  3. Step 3: Cross multiply
    1,049.75x = 1,574.61 × 400.32
  4. Step 4: Simplify right side
    1,049.75x = 630,347.88
  5. Step 5: Solve for x
    x = 630,347.88/1,049.75
  6. Step 6: Final answer
    x = 600.48

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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.