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Finding the Third Proportional to 145.96 and 317.16

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Solution

The third proportional to 145.96 and 317.16 is: 689.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    145.96 : 317.16 = 317.16 : x
  2. Step 2: Convert to fraction form
    145.96/317.16 = 317.16/x
  3. Step 3: Cross multiply
    145.96x = 317.16 × 317.16
  4. Step 4: Simplify right side
    145.96x = 100,589.02
  5. Step 5: Solve for x
    x = 100,589.02/145.96
  6. Step 6: Final answer
    x = 689.13

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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.