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Finding the Fourth Proportional to 469.92, 700.96 and 411.60

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Solution

The fourth proportional to 469.92, 700.96 and 411.60 is: 613.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.92 : 700.96 = 411.60 : x
  2. Step 2: Convert to fraction form
    469.92/700.96 = 411.60/x
  3. Step 3: Cross multiply
    469.92x = 700.96 × 411.60
  4. Step 4: Simplify right side
    469.92x = 288,515.14
  5. Step 5: Solve for x
    x = 288,515.14/469.92
  6. Step 6: Final answer
    x = 613.97

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.