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Finding the Fourth Proportional to 290.53, 435.50 and 126.10

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Solution

The fourth proportional to 290.53, 435.50 and 126.10 is: 189.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    290.53 : 435.50 = 126.10 : x
  2. Step 2: Convert to fraction form
    290.53/435.50 = 126.10/x
  3. Step 3: Cross multiply
    290.53x = 435.50 × 126.10
  4. Step 4: Simplify right side
    290.53x = 54,914.83
  5. Step 5: Solve for x
    x = 54,914.83/290.53
  6. Step 6: Final answer
    x = 189.02

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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.