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Finding the Fourth Proportional to 210.03, 290.06 and 187.12

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Solution

The fourth proportional to 210.03, 290.06 and 187.12 is: 258.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    210.03 : 290.06 = 187.12 : x
  2. Step 2: Convert to fraction form
    210.03/290.06 = 187.12/x
  3. Step 3: Cross multiply
    210.03x = 290.06 × 187.12
  4. Step 4: Simplify right side
    210.03x = 54,276.03
  5. Step 5: Solve for x
    x = 54,276.03/210.03
  6. Step 6: Final answer
    x = 258.42

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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.