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Finding the Third Proportional to 666.19 and 1,054.13

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Solution

The third proportional to 666.19 and 1,054.13 is: 1,667.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    666.19 : 1,054.13 = 1,054.13 : x
  2. Step 2: Convert to fraction form
    666.19/1,054.13 = 1,054.13/x
  3. Step 3: Cross multiply
    666.19x = 1,054.13 × 1,054.13
  4. Step 4: Simplify right side
    666.19x = 1,111,179.52
  5. Step 5: Solve for x
    x = 1,111,179.52/666.19
  6. Step 6: Final answer
    x = 1,667.97

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.