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Finding the Fourth Proportional to 297.95, 447.59 and 215.93

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Solution

The fourth proportional to 297.95, 447.59 and 215.93 is: 324.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.95 : 447.59 = 215.93 : x
  2. Step 2: Convert to fraction form
    297.95/447.59 = 215.93/x
  3. Step 3: Cross multiply
    297.95x = 447.59 × 215.93
  4. Step 4: Simplify right side
    297.95x = 96,649.77
  5. Step 5: Solve for x
    x = 96,649.77/297.95
  6. Step 6: Final answer
    x = 324.39

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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.