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Finding the Fourth Proportional to 308.93, 462.13 and 231.70

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Solution

The fourth proportional to 308.93, 462.13 and 231.70 is: 346.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.93 : 462.13 = 231.70 : x
  2. Step 2: Convert to fraction form
    308.93/462.13 = 231.70/x
  3. Step 3: Cross multiply
    308.93x = 462.13 × 231.70
  4. Step 4: Simplify right side
    308.93x = 107,075.52
  5. Step 5: Solve for x
    x = 107,075.52/308.93
  6. Step 6: Final answer
    x = 346.60

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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.