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Finding the Fourth Proportional to 863.49, 1,191.59 and 504.56

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Solution

The fourth proportional to 863.49, 1,191.59 and 504.56 is: 696.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    863.49 : 1,191.59 = 504.56 : x
  2. Step 2: Convert to fraction form
    863.49/1,191.59 = 504.56/x
  3. Step 3: Cross multiply
    863.49x = 1,191.59 × 504.56
  4. Step 4: Simplify right side
    863.49x = 601,220.17
  5. Step 5: Solve for x
    x = 601,220.17/863.49
  6. Step 6: Final answer
    x = 696.27

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Double scale
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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.