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Finding the Fourth Proportional to 441.07, 661.32 and 148.42

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Solution

The fourth proportional to 441.07, 661.32 and 148.42 is: 222.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.07 : 661.32 = 148.42 : x
  2. Step 2: Convert to fraction form
    441.07/661.32 = 148.42/x
  3. Step 3: Cross multiply
    441.07x = 661.32 × 148.42
  4. Step 4: Simplify right side
    441.07x = 98,153.11
  5. Step 5: Solve for x
    x = 98,153.11/441.07
  6. Step 6: Final answer
    x = 222.53

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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.