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Finding the Fourth Proportional to 375.93, 518.97 and 291.72

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Solution

The fourth proportional to 375.93, 518.97 and 291.72 is: 402.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.93 : 518.97 = 291.72 : x
  2. Step 2: Convert to fraction form
    375.93/518.97 = 291.72/x
  3. Step 3: Cross multiply
    375.93x = 518.97 × 291.72
  4. Step 4: Simplify right side
    375.93x = 151,393.93
  5. Step 5: Solve for x
    x = 151,393.93/375.93
  6. Step 6: Final answer
    x = 402.72

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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.