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Finding the Third Proportional to 317.50 and 352

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Solution

The third proportional to 317.50 and 352 is: 390.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.50 : 352 = 352 : x
  2. Step 2: Convert to fraction form
    317.50/352 = 352/x
  3. Step 3: Cross multiply
    317.50x = 352 × 352
  4. Step 4: Simplify right side
    317.50x = 123,904
  5. Step 5: Solve for x
    x = 123,904/317.50
  6. Step 6: Final answer
    x = 390.25

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Why These Related Problems?

These problems maintain the same ratio (1.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.