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Finding the Fourth Proportional to 245.99, 366.90 and 231.71

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Solution

The fourth proportional to 245.99, 366.90 and 231.71 is: 345.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.99 : 366.90 = 231.71 : x
  2. Step 2: Convert to fraction form
    245.99/366.90 = 231.71/x
  3. Step 3: Cross multiply
    245.99x = 366.90 × 231.71
  4. Step 4: Simplify right side
    245.99x = 85,012.90
  5. Step 5: Solve for x
    x = 85,012.90/245.99
  6. Step 6: Final answer
    x = 345.60

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.