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Finding the Third Proportional to 351 and 521.50

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Solution

The third proportional to 351 and 521.50 is: 774.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    351 : 521.50 = 521.50 : x
  2. Step 2: Convert to fraction form
    351/521.50 = 521.50/x
  3. Step 3: Cross multiply
    351x = 521.50 × 521.50
  4. Step 4: Simplify right side
    351x = 271,962.25
  5. Step 5: Solve for x
    x = 271,962.25/351
  6. Step 6: Final answer
    x = 774.82

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.