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Finding the Fourth Proportional to 296.88, 441.55 and 290.73

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Solution

The fourth proportional to 296.88, 441.55 and 290.73 is: 432.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    296.88 : 441.55 = 290.73 : x
  2. Step 2: Convert to fraction form
    296.88/441.55 = 290.73/x
  3. Step 3: Cross multiply
    296.88x = 441.55 × 290.73
  4. Step 4: Simplify right side
    296.88x = 128,371.83
  5. Step 5: Solve for x
    x = 128,371.83/296.88
  6. Step 6: Final answer
    x = 432.40

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.