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Finding the Fourth Proportional to 449.94, 621.03 and 270.61

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Solution

The fourth proportional to 449.94, 621.03 and 270.61 is: 373.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.94 : 621.03 = 270.61 : x
  2. Step 2: Convert to fraction form
    449.94/621.03 = 270.61/x
  3. Step 3: Cross multiply
    449.94x = 621.03 × 270.61
  4. Step 4: Simplify right side
    449.94x = 168,056.93
  5. Step 5: Solve for x
    x = 168,056.93/449.94
  6. Step 6: Final answer
    x = 373.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.