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Finding the Fourth Proportional to 370.94, 511.72 and 231.08

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Solution

The fourth proportional to 370.94, 511.72 and 231.08 is: 318.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.94 : 511.72 = 231.08 : x
  2. Step 2: Convert to fraction form
    370.94/511.72 = 231.08/x
  3. Step 3: Cross multiply
    370.94x = 511.72 × 231.08
  4. Step 4: Simplify right side
    370.94x = 118,245.12
  5. Step 5: Solve for x
    x = 118,245.12/370.94
  6. Step 6: Final answer
    x = 318.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.