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Finding the Fourth Proportional to 614.20, 847.62 and 352.24

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Solution

The fourth proportional to 614.20, 847.62 and 352.24 is: 486.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.20 : 847.62 = 352.24 : x
  2. Step 2: Convert to fraction form
    614.20/847.62 = 352.24/x
  3. Step 3: Cross multiply
    614.20x = 847.62 × 352.24
  4. Step 4: Simplify right side
    614.20x = 298,565.67
  5. Step 5: Solve for x
    x = 298,565.67/614.20
  6. Step 6: Final answer
    x = 486.10

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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.