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Finding the Fourth Proportional to 375.74, 518.58 and 282.95

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Solution

The fourth proportional to 375.74, 518.58 and 282.95 is: 390.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.74 : 518.58 = 282.95 : x
  2. Step 2: Convert to fraction form
    375.74/518.58 = 282.95/x
  3. Step 3: Cross multiply
    375.74x = 518.58 × 282.95
  4. Step 4: Simplify right side
    375.74x = 146,729.62
  5. Step 5: Solve for x
    x = 146,729.62/375.74
  6. Step 6: Final answer
    x = 390.51

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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.