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Finding the Fourth Proportional to 375.91, 518.77 and 210.16

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Solution

The fourth proportional to 375.91, 518.77 and 210.16 is: 290.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.91 : 518.77 = 210.16 : x
  2. Step 2: Convert to fraction form
    375.91/518.77 = 210.16/x
  3. Step 3: Cross multiply
    375.91x = 518.77 × 210.16
  4. Step 4: Simplify right side
    375.91x = 109,025.61
  5. Step 5: Solve for x
    x = 109,025.61/375.91
  6. Step 6: Final answer
    x = 290.03

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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.