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Finding the Fourth Proportional to 370.99, 511.86 and 231.04

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Solution

The fourth proportional to 370.99, 511.86 and 231.04 is: 318.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.99 : 511.86 = 231.04 : x
  2. Step 2: Convert to fraction form
    370.99/511.86 = 231.04/x
  3. Step 3: Cross multiply
    370.99x = 511.86 × 231.04
  4. Step 4: Simplify right side
    370.99x = 118,260.13
  5. Step 5: Solve for x
    x = 118,260.13/370.99
  6. Step 6: Final answer
    x = 318.77

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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.