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Finding the Fourth Proportional to 893.79, 1,341.15 and 826.13

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Solution

The fourth proportional to 893.79, 1,341.15 and 826.13 is: 1,239.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.79 : 1,341.15 = 826.13 : x
  2. Step 2: Convert to fraction form
    893.79/1,341.15 = 826.13/x
  3. Step 3: Cross multiply
    893.79x = 1,341.15 × 826.13
  4. Step 4: Simplify right side
    893.79x = 1,107,964.25
  5. Step 5: Solve for x
    x = 1,107,964.25/893.79
  6. Step 6: Final answer
    x = 1,239.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.