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Finding the Third Proportional to 507.75 and 761.81

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Solution

The third proportional to 507.75 and 761.81 is: 1,143.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.75 : 761.81 = 761.81 : x
  2. Step 2: Convert to fraction form
    507.75/761.81 = 761.81/x
  3. Step 3: Cross multiply
    507.75x = 761.81 × 761.81
  4. Step 4: Simplify right side
    507.75x = 580,358.29
  5. Step 5: Solve for x
    x = 580,358.29/507.75
  6. Step 6: Final answer
    x = 1,143.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.