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Finding the Third Proportional to 320.44 and 468.84

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Solution

The third proportional to 320.44 and 468.84 is: 685.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    320.44 : 468.84 = 468.84 : x
  2. Step 2: Convert to fraction form
    320.44/468.84 = 468.84/x
  3. Step 3: Cross multiply
    320.44x = 468.84 × 468.84
  4. Step 4: Simplify right side
    320.44x = 219,814.46
  5. Step 5: Solve for x
    x = 219,814.46/320.44
  6. Step 6: Final answer
    x = 685.98

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.