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Finding the Fourth Proportional to 606.68, 909.72 and 231.30

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Solution

The fourth proportional to 606.68, 909.72 and 231.30 is: 346.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.68 : 909.72 = 231.30 : x
  2. Step 2: Convert to fraction form
    606.68/909.72 = 231.30/x
  3. Step 3: Cross multiply
    606.68x = 909.72 × 231.30
  4. Step 4: Simplify right side
    606.68x = 210,418.24
  5. Step 5: Solve for x
    x = 210,418.24/606.68
  6. Step 6: Final answer
    x = 346.84

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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.