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Finding the Fourth Proportional to 290.42, 437.71 and 250.32

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Solution

The fourth proportional to 290.42, 437.71 and 250.32 is: 377.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    290.42 : 437.71 = 250.32 : x
  2. Step 2: Convert to fraction form
    290.42/437.71 = 250.32/x
  3. Step 3: Cross multiply
    290.42x = 437.71 × 250.32
  4. Step 4: Simplify right side
    290.42x = 109,567.57
  5. Step 5: Solve for x
    x = 109,567.57/290.42
  6. Step 6: Final answer
    x = 377.28

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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.