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Finding the Fourth Proportional to 296.16, 441.76 and 283.20

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Solution

The fourth proportional to 296.16, 441.76 and 283.20 is: 422.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    296.16 : 441.76 = 283.20 : x
  2. Step 2: Convert to fraction form
    296.16/441.76 = 283.20/x
  3. Step 3: Cross multiply
    296.16x = 441.76 × 283.20
  4. Step 4: Simplify right side
    296.16x = 125,106.43
  5. Step 5: Solve for x
    x = 125,106.43/296.16
  6. Step 6: Final answer
    x = 422.43

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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.