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Finding the Fourth Proportional to 290.99, 436.34 and 188.33

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Solution

The fourth proportional to 290.99, 436.34 and 188.33 is: 282.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    290.99 : 436.34 = 188.33 : x
  2. Step 2: Convert to fraction form
    290.99/436.34 = 188.33/x
  3. Step 3: Cross multiply
    290.99x = 436.34 × 188.33
  4. Step 4: Simplify right side
    290.99x = 82,173.14
  5. Step 5: Solve for x
    x = 82,173.14/290.99
  6. Step 6: Final answer
    x = 282.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.