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Finding the Third Proportional to 291.94 and 448.88

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Solution

The third proportional to 291.94 and 448.88 is: 690.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    291.94 : 448.88 = 448.88 : x
  2. Step 2: Convert to fraction form
    291.94/448.88 = 448.88/x
  3. Step 3: Cross multiply
    291.94x = 448.88 × 448.88
  4. Step 4: Simplify right side
    291.94x = 201,488.77
  5. Step 5: Solve for x
    x = 201,488.77/291.94
  6. Step 6: Final answer
    x = 690.18

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.