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Finding the Fourth Proportional to 264.94, 396.98 and 221.74

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Solution

The fourth proportional to 264.94, 396.98 and 221.74 is: 332.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.94 : 396.98 = 221.74 : x
  2. Step 2: Convert to fraction form
    264.94/396.98 = 221.74/x
  3. Step 3: Cross multiply
    264.94x = 396.98 × 221.74
  4. Step 4: Simplify right side
    264.94x = 88,026.35
  5. Step 5: Solve for x
    x = 88,026.35/264.94
  6. Step 6: Final answer
    x = 332.25

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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.