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Finding the Fourth Proportional to 1,474.63, 2,211.89 and 500.74

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Solution

The fourth proportional to 1,474.63, 2,211.89 and 500.74 is: 751.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,474.63 : 2,211.89 = 500.74 : x
  2. Step 2: Convert to fraction form
    1,474.63/2,211.89 = 500.74/x
  3. Step 3: Cross multiply
    1,474.63x = 2,211.89 × 500.74
  4. Step 4: Simplify right side
    1,474.63x = 1,107,581.80
  5. Step 5: Solve for x
    x = 1,107,581.80/1,474.63
  6. Step 6: Final answer
    x = 751.09

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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.