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Finding the Fourth Proportional to 863.19, 1,190.70 and 600.75

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Solution

The fourth proportional to 863.19, 1,190.70 and 600.75 is: 828.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    863.19 : 1,190.70 = 600.75 : x
  2. Step 2: Convert to fraction form
    863.19/1,190.70 = 600.75/x
  3. Step 3: Cross multiply
    863.19x = 1,190.70 × 600.75
  4. Step 4: Simplify right side
    863.19x = 715,313.03
  5. Step 5: Solve for x
    x = 715,313.03/863.19
  6. Step 6: Final answer
    x = 828.69

Related Problems

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Half scale
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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.