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Finding the Third Proportional to 684.38 and 1,051.88

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Solution

The third proportional to 684.38 and 1,051.88 is: 1,616.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    684.38 : 1,051.88 = 1,051.88 : x
  2. Step 2: Convert to fraction form
    684.38/1,051.88 = 1,051.88/x
  3. Step 3: Cross multiply
    684.38x = 1,051.88 × 1,051.88
  4. Step 4: Simplify right side
    684.38x = 1,106,441.02
  5. Step 5: Solve for x
    x = 1,106,441.02/684.38
  6. Step 6: Final answer
    x = 1,616.72

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.