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Finding the Third Proportional to 405.66 and 882.19

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Solution

The third proportional to 405.66 and 882.19 is: 1,918.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    405.66 : 882.19 = 882.19 : x
  2. Step 2: Convert to fraction form
    405.66/882.19 = 882.19/x
  3. Step 3: Cross multiply
    405.66x = 882.19 × 882.19
  4. Step 4: Simplify right side
    405.66x = 778,254.79
  5. Step 5: Solve for x
    x = 778,254.79/405.66
  6. Step 6: Final answer
    x = 1,918.51

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.