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Finding the Third Proportional to 156.63 and 339.13

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Solution

The third proportional to 156.63 and 339.13 is: 734.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    156.63 : 339.13 = 339.13 : x
  2. Step 2: Convert to fraction form
    156.63/339.13 = 339.13/x
  3. Step 3: Cross multiply
    156.63x = 339.13 × 339.13
  4. Step 4: Simplify right side
    156.63x = 115,005.77
  5. Step 5: Solve for x
    x = 115,005.77/156.63
  6. Step 6: Final answer
    x = 734.27

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.