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Finding the Fourth Proportional to 409.45, 610.95 and 370.28

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Solution

The fourth proportional to 409.45, 610.95 and 370.28 is: 552.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    409.45 : 610.95 = 370.28 : x
  2. Step 2: Convert to fraction form
    409.45/610.95 = 370.28/x
  3. Step 3: Cross multiply
    409.45x = 610.95 × 370.28
  4. Step 4: Simplify right side
    409.45x = 226,222.57
  5. Step 5: Solve for x
    x = 226,222.57/409.45
  6. Step 6: Final answer
    x = 552.50

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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.