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Finding the Third Proportional to 912.09 and 1,256.77

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Solution

The third proportional to 912.09 and 1,256.77 is: 1,731.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    912.09 : 1,256.77 = 1,256.77 : x
  2. Step 2: Convert to fraction form
    912.09/1,256.77 = 1,256.77/x
  3. Step 3: Cross multiply
    912.09x = 1,256.77 × 1,256.77
  4. Step 4: Simplify right side
    912.09x = 1,579,459.84
  5. Step 5: Solve for x
    x = 1,579,459.84/912.09
  6. Step 6: Final answer
    x = 1,731.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.