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Finding the Fourth Proportional to 411.45, 619.95 and 367.24

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Solution

The fourth proportional to 411.45, 619.95 and 367.24 is: 553.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    411.45 : 619.95 = 367.24 : x
  2. Step 2: Convert to fraction form
    411.45/619.95 = 367.24/x
  3. Step 3: Cross multiply
    411.45x = 619.95 × 367.24
  4. Step 4: Simplify right side
    411.45x = 227,665.50
  5. Step 5: Solve for x
    x = 227,665.50/411.45
  6. Step 6: Final answer
    x = 553.32

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.