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Finding the Fourth Proportional to 290.81, 402.14 and 244.76

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Solution

The fourth proportional to 290.81, 402.14 and 244.76 is: 338.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    290.81 : 402.14 = 244.76 : x
  2. Step 2: Convert to fraction form
    290.81/402.14 = 244.76/x
  3. Step 3: Cross multiply
    290.81x = 402.14 × 244.76
  4. Step 4: Simplify right side
    290.81x = 98,426.39
  5. Step 5: Solve for x
    x = 98,426.39/290.81
  6. Step 6: Final answer
    x = 338.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.