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Finding the Third Proportional to 432.21 and 801.77

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Solution

The third proportional to 432.21 and 801.77 is: 1,487.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    432.21 : 801.77 = 801.77 : x
  2. Step 2: Convert to fraction form
    432.21/801.77 = 801.77/x
  3. Step 3: Cross multiply
    432.21x = 801.77 × 801.77
  4. Step 4: Simplify right side
    432.21x = 642,840.65
  5. Step 5: Solve for x
    x = 642,840.65/432.21
  6. Step 6: Final answer
    x = 1,487.33

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Why These Related Problems?

These problems maintain the same ratio (1.86) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.