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Finding the Fourth Proportional to 385.38, 577.23 and 222.66

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Solution

The fourth proportional to 385.38, 577.23 and 222.66 is: 333.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    385.38 : 577.23 = 222.66 : x
  2. Step 2: Convert to fraction form
    385.38/577.23 = 222.66/x
  3. Step 3: Cross multiply
    385.38x = 577.23 × 222.66
  4. Step 4: Simplify right side
    385.38x = 128,526.03
  5. Step 5: Solve for x
    x = 128,526.03/385.38
  6. Step 6: Final answer
    x = 333.50

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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.