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Finding the Fourth Proportional to 1,003.27, 1,502.46 and 613.45

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Solution

The fourth proportional to 1,003.27, 1,502.46 and 613.45 is: 918.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,003.27 : 1,502.46 = 613.45 : x
  2. Step 2: Convert to fraction form
    1,003.27/1,502.46 = 613.45/x
  3. Step 3: Cross multiply
    1,003.27x = 1,502.46 × 613.45
  4. Step 4: Simplify right side
    1,003.27x = 921,684.09
  5. Step 5: Solve for x
    x = 921,684.09/1,003.27
  6. Step 6: Final answer
    x = 918.68

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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.