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Finding the Fourth Proportional to 577.41, 866.49 and 212.19

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Solution

The fourth proportional to 577.41, 866.49 and 212.19 is: 318.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.41 : 866.49 = 212.19 : x
  2. Step 2: Convert to fraction form
    577.41/866.49 = 212.19/x
  3. Step 3: Cross multiply
    577.41x = 866.49 × 212.19
  4. Step 4: Simplify right side
    577.41x = 183,860.51
  5. Step 5: Solve for x
    x = 183,860.51/577.41
  6. Step 6: Final answer
    x = 318.42

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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.