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Finding the Fourth Proportional to 210.52, 290.52 and 117.27

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Solution

The fourth proportional to 210.52, 290.52 and 117.27 is: 161.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    210.52 : 290.52 = 117.27 : x
  2. Step 2: Convert to fraction form
    210.52/290.52 = 117.27/x
  3. Step 3: Cross multiply
    210.52x = 290.52 × 117.27
  4. Step 4: Simplify right side
    210.52x = 34,070.10
  5. Step 5: Solve for x
    x = 34,070.10/210.52
  6. Step 6: Final answer
    x = 161.83

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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.