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Finding the Third Proportional to 505.13 and 986.19

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Solution

The third proportional to 505.13 and 986.19 is: 1,925.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.13 : 986.19 = 986.19 : x
  2. Step 2: Convert to fraction form
    505.13/986.19 = 986.19/x
  3. Step 3: Cross multiply
    505.13x = 986.19 × 986.19
  4. Step 4: Simplify right side
    505.13x = 972,565.79
  5. Step 5: Solve for x
    x = 972,565.79/505.13
  6. Step 6: Final answer
    x = 1,925.40

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.