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Finding the Fourth Proportional to 294.57, 441.87 and 285.69

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Solution

The fourth proportional to 294.57, 441.87 and 285.69 is: 428.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.57 : 441.87 = 285.69 : x
  2. Step 2: Convert to fraction form
    294.57/441.87 = 285.69/x
  3. Step 3: Cross multiply
    294.57x = 441.87 × 285.69
  4. Step 4: Simplify right side
    294.57x = 126,235.11
  5. Step 5: Solve for x
    x = 126,235.11/294.57
  6. Step 6: Final answer
    x = 428.53

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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.