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Finding the Fourth Proportional to 445.65, 669.10 and 240.94

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Solution

The fourth proportional to 445.65, 669.10 and 240.94 is: 361.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.65 : 669.10 = 240.94 : x
  2. Step 2: Convert to fraction form
    445.65/669.10 = 240.94/x
  3. Step 3: Cross multiply
    445.65x = 669.10 × 240.94
  4. Step 4: Simplify right side
    445.65x = 161,212.95
  5. Step 5: Solve for x
    x = 161,212.95/445.65
  6. Step 6: Final answer
    x = 361.75

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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.