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Finding the Fourth Proportional to 290.83, 435.95 and 136.64

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Solution

The fourth proportional to 290.83, 435.95 and 136.64 is: 204.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    290.83 : 435.95 = 136.64 : x
  2. Step 2: Convert to fraction form
    290.83/435.95 = 136.64/x
  3. Step 3: Cross multiply
    290.83x = 435.95 × 136.64
  4. Step 4: Simplify right side
    290.83x = 59,568.21
  5. Step 5: Solve for x
    x = 59,568.21/290.83
  6. Step 6: Final answer
    x = 204.82

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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.