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Finding the Third Proportional to 469.13 and 986.81

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Solution

The third proportional to 469.13 and 986.81 is: 2,075.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.13 : 986.81 = 986.81 : x
  2. Step 2: Convert to fraction form
    469.13/986.81 = 986.81/x
  3. Step 3: Cross multiply
    469.13x = 986.81 × 986.81
  4. Step 4: Simplify right side
    469.13x = 973,798.91
  5. Step 5: Solve for x
    x = 973,798.91/469.13
  6. Step 6: Final answer
    x = 2,075.78

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.