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Finding the Fourth Proportional to 531.11, 796.61 and 141.12

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Solution

The fourth proportional to 531.11, 796.61 and 141.12 is: 211.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.11 : 796.61 = 141.12 : x
  2. Step 2: Convert to fraction form
    531.11/796.61 = 141.12/x
  3. Step 3: Cross multiply
    531.11x = 796.61 × 141.12
  4. Step 4: Simplify right side
    531.11x = 112,415.32
  5. Step 5: Solve for x
    x = 112,415.32/531.11
  6. Step 6: Final answer
    x = 211.66

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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.