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Finding the Fourth Proportional to 370.85, 511.89 and 231.19

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Solution

The fourth proportional to 370.85, 511.89 and 231.19 is: 319.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.85 : 511.89 = 231.19 : x
  2. Step 2: Convert to fraction form
    370.85/511.89 = 231.19/x
  3. Step 3: Cross multiply
    370.85x = 511.89 × 231.19
  4. Step 4: Simplify right side
    370.85x = 118,341.70
  5. Step 5: Solve for x
    x = 118,341.70/370.85
  6. Step 6: Final answer
    x = 319.11

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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.