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Finding the Fourth Proportional to 577.78, 866.94 and 346.75

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Solution

The fourth proportional to 577.78, 866.94 and 346.75 is: 520.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.78 : 866.94 = 346.75 : x
  2. Step 2: Convert to fraction form
    577.78/866.94 = 346.75/x
  3. Step 3: Cross multiply
    577.78x = 866.94 × 346.75
  4. Step 4: Simplify right side
    577.78x = 300,611.45
  5. Step 5: Solve for x
    x = 300,611.45/577.78
  6. Step 6: Final answer
    x = 520.29

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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.