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Finding the Fourth Proportional to 1,323.97, 1,986.05 and 502.09

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Solution

The fourth proportional to 1,323.97, 1,986.05 and 502.09 is: 753.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323.97 : 1,986.05 = 502.09 : x
  2. Step 2: Convert to fraction form
    1,323.97/1,986.05 = 502.09/x
  3. Step 3: Cross multiply
    1,323.97x = 1,986.05 × 502.09
  4. Step 4: Simplify right side
    1,323.97x = 997,172.13
  5. Step 5: Solve for x
    x = 997,172.13/1,323.97
  6. Step 6: Final answer
    x = 753.17

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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.