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Finding the Fourth Proportional to 774.22, 1,162.02 and 363.58

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Solution

The fourth proportional to 774.22, 1,162.02 and 363.58 is: 545.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    774.22 : 1,162.02 = 363.58 : x
  2. Step 2: Convert to fraction form
    774.22/1,162.02 = 363.58/x
  3. Step 3: Cross multiply
    774.22x = 1,162.02 × 363.58
  4. Step 4: Simplify right side
    774.22x = 422,487.23
  5. Step 5: Solve for x
    x = 422,487.23/774.22
  6. Step 6: Final answer
    x = 545.69

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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.