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Finding the Fourth Proportional to 477.79, 717.35 and 246.85

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Solution

The fourth proportional to 477.79, 717.35 and 246.85 is: 370.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.79 : 717.35 = 246.85 : x
  2. Step 2: Convert to fraction form
    477.79/717.35 = 246.85/x
  3. Step 3: Cross multiply
    477.79x = 717.35 × 246.85
  4. Step 4: Simplify right side
    477.79x = 177,074.82
  5. Step 5: Solve for x
    x = 177,074.82/477.79
  6. Step 6: Final answer
    x = 370.61

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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.