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Finding the Third Proportional to 1,161 and 1,335

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Solution

The third proportional to 1,161 and 1,335 is: 1,535.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,161 : 1,335 = 1,335 : x
  2. Step 2: Convert to fraction form
    1,161/1,335 = 1,335/x
  3. Step 3: Cross multiply
    1,161x = 1,335 × 1,335
  4. Step 4: Simplify right side
    1,161x = 1,782,225
  5. Step 5: Solve for x
    x = 1,782,225/1,161
  6. Step 6: Final answer
    x = 1,535.08

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Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.