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Finding the Fourth Proportional to 466.95, 642.87 and 408.69

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Solution

The fourth proportional to 466.95, 642.87 and 408.69 is: 562.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    466.95 : 642.87 = 408.69 : x
  2. Step 2: Convert to fraction form
    466.95/642.87 = 408.69/x
  3. Step 3: Cross multiply
    466.95x = 642.87 × 408.69
  4. Step 4: Simplify right side
    466.95x = 262,734.54
  5. Step 5: Solve for x
    x = 262,734.54/466.95
  6. Step 6: Final answer
    x = 562.66

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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.