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Finding the Fourth Proportional to 276.83, 412.90 and 235.79

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Solution

The fourth proportional to 276.83, 412.90 and 235.79 is: 351.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.83 : 412.90 = 235.79 : x
  2. Step 2: Convert to fraction form
    276.83/412.90 = 235.79/x
  3. Step 3: Cross multiply
    276.83x = 412.90 × 235.79
  4. Step 4: Simplify right side
    276.83x = 97,357.69
  5. Step 5: Solve for x
    x = 97,357.69/276.83
  6. Step 6: Final answer
    x = 351.69

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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.