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Finding the Fourth Proportional to 577.85, 866.93 and 231.23

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Solution

The fourth proportional to 577.85, 866.93 and 231.23 is: 346.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.85 : 866.93 = 231.23 : x
  2. Step 2: Convert to fraction form
    577.85/866.93 = 231.23/x
  3. Step 3: Cross multiply
    577.85x = 866.93 × 231.23
  4. Step 4: Simplify right side
    577.85x = 200,459.07
  5. Step 5: Solve for x
    x = 200,459.07/577.85
  6. Step 6: Final answer
    x = 346.91

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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.