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Finding the Fourth Proportional to 614.40, 847.92 and 352.50

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Solution

The fourth proportional to 614.40, 847.92 and 352.50 is: 486.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.40 : 847.92 = 352.50 : x
  2. Step 2: Convert to fraction form
    614.40/847.92 = 352.50/x
  3. Step 3: Cross multiply
    614.40x = 847.92 × 352.50
  4. Step 4: Simplify right side
    614.40x = 298,891.80
  5. Step 5: Solve for x
    x = 298,891.80/614.40
  6. Step 6: Final answer
    x = 486.48

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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.