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Finding the Fourth Proportional to 411.24, 613.52 and 400.08

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Solution

The fourth proportional to 411.24, 613.52 and 400.08 is: 596.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    411.24 : 613.52 = 400.08 : x
  2. Step 2: Convert to fraction form
    411.24/613.52 = 400.08/x
  3. Step 3: Cross multiply
    411.24x = 613.52 × 400.08
  4. Step 4: Simplify right side
    411.24x = 245,457.08
  5. Step 5: Solve for x
    x = 245,457.08/411.24
  6. Step 6: Final answer
    x = 596.87

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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.