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Finding the Fourth Proportional to 404.24, 606.46 and 130.38

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Solution

The fourth proportional to 404.24, 606.46 and 130.38 is: 195.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.24 : 606.46 = 130.38 : x
  2. Step 2: Convert to fraction form
    404.24/606.46 = 130.38/x
  3. Step 3: Cross multiply
    404.24x = 606.46 × 130.38
  4. Step 4: Simplify right side
    404.24x = 79,070.25
  5. Step 5: Solve for x
    x = 79,070.25/404.24
  6. Step 6: Final answer
    x = 195.60

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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.