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Finding the Fourth Proportional to 296.10, 407.88 and 281.52

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Solution

The fourth proportional to 296.10, 407.88 and 281.52 is: 387.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    296.10 : 407.88 = 281.52 : x
  2. Step 2: Convert to fraction form
    296.10/407.88 = 281.52/x
  3. Step 3: Cross multiply
    296.10x = 407.88 × 281.52
  4. Step 4: Simplify right side
    296.10x = 114,826.38
  5. Step 5: Solve for x
    x = 114,826.38/296.10
  6. Step 6: Final answer
    x = 387.80

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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.