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Finding the Fourth Proportional to 863.48, 1,191.48 and 514.04

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Solution

The fourth proportional to 863.48, 1,191.48 and 514.04 is: 709.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    863.48 : 1,191.48 = 514.04 : x
  2. Step 2: Convert to fraction form
    863.48/1,191.48 = 514.04/x
  3. Step 3: Cross multiply
    863.48x = 1,191.48 × 514.04
  4. Step 4: Simplify right side
    863.48x = 612,468.38
  5. Step 5: Solve for x
    x = 612,468.38/863.48
  6. Step 6: Final answer
    x = 709.30

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.