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Finding the Fourth Proportional to 1,474.72, 2,211.32 and 550.24

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Solution

The fourth proportional to 1,474.72, 2,211.32 and 550.24 is: 825.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,474.72 : 2,211.32 = 550.24 : x
  2. Step 2: Convert to fraction form
    1,474.72/2,211.32 = 550.24/x
  3. Step 3: Cross multiply
    1,474.72x = 2,211.32 × 550.24
  4. Step 4: Simplify right side
    1,474.72x = 1,216,756.72
  5. Step 5: Solve for x
    x = 1,216,756.72/1,474.72
  6. Step 6: Final answer
    x = 825.08

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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.