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Finding the Fourth Proportional to 244.79, 336.83 and 221.50

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Solution

The fourth proportional to 244.79, 336.83 and 221.50 is: 304.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    244.79 : 336.83 = 221.50 : x
  2. Step 2: Convert to fraction form
    244.79/336.83 = 221.50/x
  3. Step 3: Cross multiply
    244.79x = 336.83 × 221.50
  4. Step 4: Simplify right side
    244.79x = 74,607.16
  5. Step 5: Solve for x
    x = 74,607.16/244.79
  6. Step 6: Final answer
    x = 304.78

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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.