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Finding the Third Proportional to 630 and 716.25

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Solution

The third proportional to 630 and 716.25 is: 814.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    630 : 716.25 = 716.25 : x
  2. Step 2: Convert to fraction form
    630/716.25 = 716.25/x
  3. Step 3: Cross multiply
    630x = 716.25 × 716.25
  4. Step 4: Simplify right side
    630x = 513,014.06
  5. Step 5: Solve for x
    x = 513,014.06/630
  6. Step 6: Final answer
    x = 814.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.