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Finding the Third Proportional to 947 and 1,507.50

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Solution

The third proportional to 947 and 1,507.50 is: 2,399.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    947 : 1,507.50 = 1,507.50 : x
  2. Step 2: Convert to fraction form
    947/1,507.50 = 1,507.50/x
  3. Step 3: Cross multiply
    947x = 1,507.50 × 1,507.50
  4. Step 4: Simplify right side
    947x = 2,272,556.25
  5. Step 5: Solve for x
    x = 2,272,556.25/947
  6. Step 6: Final answer
    x = 2,399.74

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.