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Finding the Fourth Proportional to 1,282.64, 1,922.99 and 502.54

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Solution

The fourth proportional to 1,282.64, 1,922.99 and 502.54 is: 753.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,282.64 : 1,922.99 = 502.54 : x
  2. Step 2: Convert to fraction form
    1,282.64/1,922.99 = 502.54/x
  3. Step 3: Cross multiply
    1,282.64x = 1,922.99 × 502.54
  4. Step 4: Simplify right side
    1,282.64x = 966,372.07
  5. Step 5: Solve for x
    x = 966,372.07/1,282.64
  6. Step 6: Final answer
    x = 753.42

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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.