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Finding the Third Proportional to 262.38 and 383.81

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Solution

The third proportional to 262.38 and 383.81 is: 561.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.38 : 383.81 = 383.81 : x
  2. Step 2: Convert to fraction form
    262.38/383.81 = 383.81/x
  3. Step 3: Cross multiply
    262.38x = 383.81 × 383.81
  4. Step 4: Simplify right side
    262.38x = 147,312.04
  5. Step 5: Solve for x
    x = 147,312.04/262.38
  6. Step 6: Final answer
    x = 561.46

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.