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Finding the Fourth Proportional to 614.21, 847.61 and 352.23

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Solution

The fourth proportional to 614.21, 847.61 and 352.23 is: 486.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.21 : 847.61 = 352.23 : x
  2. Step 2: Convert to fraction form
    614.21/847.61 = 352.23/x
  3. Step 3: Cross multiply
    614.21x = 847.61 × 352.23
  4. Step 4: Simplify right side
    614.21x = 298,549.43
  5. Step 5: Solve for x
    x = 298,549.43/614.21
  6. Step 6: Final answer
    x = 486.07

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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.