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Finding the Fourth Proportional to 404.49, 606.75 and 130.62

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Solution

The fourth proportional to 404.49, 606.75 and 130.62 is: 195.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.49 : 606.75 = 130.62 : x
  2. Step 2: Convert to fraction form
    404.49/606.75 = 130.62/x
  3. Step 3: Cross multiply
    404.49x = 606.75 × 130.62
  4. Step 4: Simplify right side
    404.49x = 79,253.69
  5. Step 5: Solve for x
    x = 79,253.69/404.49
  6. Step 6: Final answer
    x = 195.93

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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.