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Finding the Fourth Proportional to 314.88, 433.99 and 216.46

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Solution

The fourth proportional to 314.88, 433.99 and 216.46 is: 298.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    314.88 : 433.99 = 216.46 : x
  2. Step 2: Convert to fraction form
    314.88/433.99 = 216.46/x
  3. Step 3: Cross multiply
    314.88x = 433.99 × 216.46
  4. Step 4: Simplify right side
    314.88x = 93,940.39
  5. Step 5: Solve for x
    x = 93,940.39/314.88
  6. Step 6: Final answer
    x = 298.34

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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.