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Finding the Third Proportional to 670.13 and 900.56

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Solution

The third proportional to 670.13 and 900.56 is: 1,210.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.13 : 900.56 = 900.56 : x
  2. Step 2: Convert to fraction form
    670.13/900.56 = 900.56/x
  3. Step 3: Cross multiply
    670.13x = 900.56 × 900.56
  4. Step 4: Simplify right side
    670.13x = 811,012.82
  5. Step 5: Solve for x
    x = 811,012.82/670.13
  6. Step 6: Final answer
    x = 1,210.24

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.