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Finding the Fourth Proportional to 290.13, 400.50 and 185.35

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Solution

The fourth proportional to 290.13, 400.50 and 185.35 is: 255.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    290.13 : 400.50 = 185.35 : x
  2. Step 2: Convert to fraction form
    290.13/400.50 = 185.35/x
  3. Step 3: Cross multiply
    290.13x = 400.50 × 185.35
  4. Step 4: Simplify right side
    290.13x = 74,232.68
  5. Step 5: Solve for x
    x = 74,232.68/290.13
  6. Step 6: Final answer
    x = 255.86

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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.