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Finding the Fourth Proportional to 626.25, 863.28 and 552.15

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Solution

The fourth proportional to 626.25, 863.28 and 552.15 is: 761.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.25 : 863.28 = 552.15 : x
  2. Step 2: Convert to fraction form
    626.25/863.28 = 552.15/x
  3. Step 3: Cross multiply
    626.25x = 863.28 × 552.15
  4. Step 4: Simplify right side
    626.25x = 476,660.05
  5. Step 5: Solve for x
    x = 476,660.05/626.25
  6. Step 6: Final answer
    x = 761.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.