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Finding the Fourth Proportional to 614.26, 847.87 and 378.28

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Solution

The fourth proportional to 614.26, 847.87 and 378.28 is: 522.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.26 : 847.87 = 378.28 : x
  2. Step 2: Convert to fraction form
    614.26/847.87 = 378.28/x
  3. Step 3: Cross multiply
    614.26x = 847.87 × 378.28
  4. Step 4: Simplify right side
    614.26x = 320,732.26
  5. Step 5: Solve for x
    x = 320,732.26/614.26
  6. Step 6: Final answer
    x = 522.14

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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.