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Finding the Fourth Proportional to 863.44, 1,191 and 569.08

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Solution

The fourth proportional to 863.44, 1,191 and 569.08 is: 784.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    863.44 : 1,191 = 569.08 : x
  2. Step 2: Convert to fraction form
    863.44/1,191 = 569.08/x
  3. Step 3: Cross multiply
    863.44x = 1,191 × 569.08
  4. Step 4: Simplify right side
    863.44x = 677,774.28
  5. Step 5: Solve for x
    x = 677,774.28/863.44
  6. Step 6: Final answer
    x = 784.97

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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.