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Finding the Fourth Proportional to 404.56, 606.92 and 148.08

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Solution

The fourth proportional to 404.56, 606.92 and 148.08 is: 222.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.56 : 606.92 = 148.08 : x
  2. Step 2: Convert to fraction form
    404.56/606.92 = 148.08/x
  3. Step 3: Cross multiply
    404.56x = 606.92 × 148.08
  4. Step 4: Simplify right side
    404.56x = 89,872.71
  5. Step 5: Solve for x
    x = 89,872.71/404.56
  6. Step 6: Final answer
    x = 222.15

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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.