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Finding the Third Proportional to 279.63 and 607.31

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Solution

The third proportional to 279.63 and 607.31 is: 1,319.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    279.63 : 607.31 = 607.31 : x
  2. Step 2: Convert to fraction form
    279.63/607.31 = 607.31/x
  3. Step 3: Cross multiply
    279.63x = 607.31 × 607.31
  4. Step 4: Simplify right side
    279.63x = 368,828.47
  5. Step 5: Solve for x
    x = 368,828.47/279.63
  6. Step 6: Final answer
    x = 1,319.01

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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.