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Finding the Third Proportional to 730.31 and 1,572

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Solution

The third proportional to 730.31 and 1,572 is: 3,383.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.31 : 1,572 = 1,572 : x
  2. Step 2: Convert to fraction form
    730.31/1,572 = 1,572/x
  3. Step 3: Cross multiply
    730.31x = 1,572 × 1,572
  4. Step 4: Simplify right side
    730.31x = 2,471,184
  5. Step 5: Solve for x
    x = 2,471,184/730.31
  6. Step 6: Final answer
    x = 3,383.74

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.