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Finding the Fourth Proportional to 295.07, 406.99 and 217.31

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Solution

The fourth proportional to 295.07, 406.99 and 217.31 is: 299.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    295.07 : 406.99 = 217.31 : x
  2. Step 2: Convert to fraction form
    295.07/406.99 = 217.31/x
  3. Step 3: Cross multiply
    295.07x = 406.99 × 217.31
  4. Step 4: Simplify right side
    295.07x = 88,443.00
  5. Step 5: Solve for x
    x = 88,443.00/295.07
  6. Step 6: Final answer
    x = 299.74

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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.