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Finding the Third Proportional to 221.50 and 316

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Solution

The third proportional to 221.50 and 316 is: 450.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    221.50 : 316 = 316 : x
  2. Step 2: Convert to fraction form
    221.50/316 = 316/x
  3. Step 3: Cross multiply
    221.50x = 316 × 316
  4. Step 4: Simplify right side
    221.50x = 99,856
  5. Step 5: Solve for x
    x = 99,856/221.50
  6. Step 6: Final answer
    x = 450.82

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These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.