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Finding the Fourth Proportional to 447.06, 616.87 and 260.57

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Solution

The fourth proportional to 447.06, 616.87 and 260.57 is: 359.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.06 : 616.87 = 260.57 : x
  2. Step 2: Convert to fraction form
    447.06/616.87 = 260.57/x
  3. Step 3: Cross multiply
    447.06x = 616.87 × 260.57
  4. Step 4: Simplify right side
    447.06x = 160,737.82
  5. Step 5: Solve for x
    x = 160,737.82/447.06
  6. Step 6: Final answer
    x = 359.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.