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Finding the Third Proportional to 155.91 and 266.06

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Solution

The third proportional to 155.91 and 266.06 is: 454.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.91 : 266.06 = 266.06 : x
  2. Step 2: Convert to fraction form
    155.91/266.06 = 266.06/x
  3. Step 3: Cross multiply
    155.91x = 266.06 × 266.06
  4. Step 4: Simplify right side
    155.91x = 70,789.25
  5. Step 5: Solve for x
    x = 70,789.25/155.91
  6. Step 6: Final answer
    x = 454.05

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Why These Related Problems?

These problems maintain the same ratio (1.71) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.