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Finding the Fourth Proportional to 210.73, 290.77 and 117.44

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Solution

The fourth proportional to 210.73, 290.77 and 117.44 is: 162.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    210.73 : 290.77 = 117.44 : x
  2. Step 2: Convert to fraction form
    210.73/290.77 = 117.44/x
  3. Step 3: Cross multiply
    210.73x = 290.77 × 117.44
  4. Step 4: Simplify right side
    210.73x = 34,147.74
  5. Step 5: Solve for x
    x = 34,147.74/210.73
  6. Step 6: Final answer
    x = 162.05

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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.