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Finding the Fourth Proportional to 776.01, 1,163.74 and 228.19

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Solution

The fourth proportional to 776.01, 1,163.74 and 228.19 is: 342.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    776.01 : 1,163.74 = 228.19 : x
  2. Step 2: Convert to fraction form
    776.01/1,163.74 = 228.19/x
  3. Step 3: Cross multiply
    776.01x = 1,163.74 × 228.19
  4. Step 4: Simplify right side
    776.01x = 265,556.88
  5. Step 5: Solve for x
    x = 265,556.88/776.01
  6. Step 6: Final answer
    x = 342.21

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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.