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Finding the Fourth Proportional to 214.97, 297.47 and 185.81

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Solution

The fourth proportional to 214.97, 297.47 and 185.81 is: 257.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    214.97 : 297.47 = 185.81 : x
  2. Step 2: Convert to fraction form
    214.97/297.47 = 185.81/x
  3. Step 3: Cross multiply
    214.97x = 297.47 × 185.81
  4. Step 4: Simplify right side
    214.97x = 55,271.88
  5. Step 5: Solve for x
    x = 55,271.88/214.97
  6. Step 6: Final answer
    x = 257.12

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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.