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Finding the Third Proportional to 243.56 and 383.44

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Solution

The third proportional to 243.56 and 383.44 is: 603.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.56 : 383.44 = 383.44 : x
  2. Step 2: Convert to fraction form
    243.56/383.44 = 383.44/x
  3. Step 3: Cross multiply
    243.56x = 383.44 × 383.44
  4. Step 4: Simplify right side
    243.56x = 147,024.32
  5. Step 5: Solve for x
    x = 147,024.32/243.56
  6. Step 6: Final answer
    x = 603.64

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.