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Finding the Fourth Proportional to 411.50, 616.27 and 300.02

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Solution

The fourth proportional to 411.50, 616.27 and 300.02 is: 449.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    411.50 : 616.27 = 300.02 : x
  2. Step 2: Convert to fraction form
    411.50/616.27 = 300.02/x
  3. Step 3: Cross multiply
    411.50x = 616.27 × 300.02
  4. Step 4: Simplify right side
    411.50x = 184,895.24
  5. Step 5: Solve for x
    x = 184,895.24/411.50
  6. Step 6: Final answer
    x = 449.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.