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Finding the Third Proportional to 660.66 and 977.06

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Solution

The third proportional to 660.66 and 977.06 is: 1,445.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    660.66 : 977.06 = 977.06 : x
  2. Step 2: Convert to fraction form
    660.66/977.06 = 977.06/x
  3. Step 3: Cross multiply
    660.66x = 977.06 × 977.06
  4. Step 4: Simplify right side
    660.66x = 954,651.13
  5. Step 5: Solve for x
    x = 954,651.13/660.66
  6. Step 6: Final answer
    x = 1,445.00

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.