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Finding the Fourth Proportional to 210.45, 290.37 and 179.31

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Solution

The fourth proportional to 210.45, 290.37 and 179.31 is: 247.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    210.45 : 290.37 = 179.31 : x
  2. Step 2: Convert to fraction form
    210.45/290.37 = 179.31/x
  3. Step 3: Cross multiply
    210.45x = 290.37 × 179.31
  4. Step 4: Simplify right side
    210.45x = 52,066.92
  5. Step 5: Solve for x
    x = 52,066.92/210.45
  6. Step 6: Final answer
    x = 247.41

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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.