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Finding the Third Proportional to 158.99 and 347.89

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Solution

The third proportional to 158.99 and 347.89 is: 761.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.99 : 347.89 = 347.89 : x
  2. Step 2: Convert to fraction form
    158.99/347.89 = 347.89/x
  3. Step 3: Cross multiply
    158.99x = 347.89 × 347.89
  4. Step 4: Simplify right side
    158.99x = 121,026.53
  5. Step 5: Solve for x
    x = 121,026.53/158.99
  6. Step 6: Final answer
    x = 761.20

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.