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Finding the Fourth Proportional to 373.92, 515.44 and 275.51

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Solution

The fourth proportional to 373.92, 515.44 and 275.51 is: 379.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.92 : 515.44 = 275.51 : x
  2. Step 2: Convert to fraction form
    373.92/515.44 = 275.51/x
  3. Step 3: Cross multiply
    373.92x = 515.44 × 275.51
  4. Step 4: Simplify right side
    373.92x = 142,008.87
  5. Step 5: Solve for x
    x = 142,008.87/373.92
  6. Step 6: Final answer
    x = 379.78

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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.