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Finding the Third Proportional to 235.13 and 618.19

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Solution

The third proportional to 235.13 and 618.19 is: 1,625.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.13 : 618.19 = 618.19 : x
  2. Step 2: Convert to fraction form
    235.13/618.19 = 618.19/x
  3. Step 3: Cross multiply
    235.13x = 618.19 × 618.19
  4. Step 4: Simplify right side
    235.13x = 382,155.79
  5. Step 5: Solve for x
    x = 382,155.79/235.13
  6. Step 6: Final answer
    x = 1,625.33

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Why These Related Problems?

These problems maintain the same ratio (2.63) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.