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Finding the Fourth Proportional to 863.34, 1,295.03 and 286.26

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Solution

The fourth proportional to 863.34, 1,295.03 and 286.26 is: 429.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    863.34 : 1,295.03 = 286.26 : x
  2. Step 2: Convert to fraction form
    863.34/1,295.03 = 286.26/x
  3. Step 3: Cross multiply
    863.34x = 1,295.03 × 286.26
  4. Step 4: Simplify right side
    863.34x = 370,715.29
  5. Step 5: Solve for x
    x = 370,715.29/863.34
  6. Step 6: Final answer
    x = 429.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.