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Finding the Fourth Proportional to 375.99, 518.86 and 210.19

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Solution

The fourth proportional to 375.99, 518.86 and 210.19 is: 290.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.99 : 518.86 = 210.19 : x
  2. Step 2: Convert to fraction form
    375.99/518.86 = 210.19/x
  3. Step 3: Cross multiply
    375.99x = 518.86 × 210.19
  4. Step 4: Simplify right side
    375.99x = 109,058.66
  5. Step 5: Solve for x
    x = 109,058.66/375.99
  6. Step 6: Final answer
    x = 290.06

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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.