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Finding the Third Proportional to 1,157 and 1,471

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Solution

The third proportional to 1,157 and 1,471 is: 1,870.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,157 : 1,471 = 1,471 : x
  2. Step 2: Convert to fraction form
    1,157/1,471 = 1,471/x
  3. Step 3: Cross multiply
    1,157x = 1,471 × 1,471
  4. Step 4: Simplify right side
    1,157x = 2,163,841
  5. Step 5: Solve for x
    x = 2,163,841/1,157
  6. Step 6: Final answer
    x = 1,870.22

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Why These Related Problems?

These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.