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Finding the Third Proportional to 251.63 and 384.19

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Solution

The third proportional to 251.63 and 384.19 is: 586.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.63 : 384.19 = 384.19 : x
  2. Step 2: Convert to fraction form
    251.63/384.19 = 384.19/x
  3. Step 3: Cross multiply
    251.63x = 384.19 × 384.19
  4. Step 4: Simplify right side
    251.63x = 147,600.04
  5. Step 5: Solve for x
    x = 147,600.04/251.63
  6. Step 6: Final answer
    x = 586.59

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.