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Finding the Fourth Proportional to 290.10, 437.10 and 239.87

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Solution

The fourth proportional to 290.10, 437.10 and 239.87 is: 361.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    290.10 : 437.10 = 239.87 : x
  2. Step 2: Convert to fraction form
    290.10/437.10 = 239.87/x
  3. Step 3: Cross multiply
    290.10x = 437.10 × 239.87
  4. Step 4: Simplify right side
    290.10x = 104,847.18
  5. Step 5: Solve for x
    x = 104,847.18/290.10
  6. Step 6: Final answer
    x = 361.42

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.