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Finding the Third Proportional to 666.98 and 1,455.47

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Solution

The third proportional to 666.98 and 1,455.47 is: 3,176.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    666.98 : 1,455.47 = 1,455.47 : x
  2. Step 2: Convert to fraction form
    666.98/1,455.47 = 1,455.47/x
  3. Step 3: Cross multiply
    666.98x = 1,455.47 × 1,455.47
  4. Step 4: Simplify right side
    666.98x = 2,118,389.28
  5. Step 5: Solve for x
    x = 2,118,389.28/666.98
  6. Step 6: Final answer
    x = 3,176.07

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.