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Finding the Fourth Proportional to 400.78, 601.31 and 184.51

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Solution

The fourth proportional to 400.78, 601.31 and 184.51 is: 276.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.78 : 601.31 = 184.51 : x
  2. Step 2: Convert to fraction form
    400.78/601.31 = 184.51/x
  3. Step 3: Cross multiply
    400.78x = 601.31 × 184.51
  4. Step 4: Simplify right side
    400.78x = 110,947.71
  5. Step 5: Solve for x
    x = 110,947.71/400.78
  6. Step 6: Final answer
    x = 276.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.