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Finding the Fourth Proportional to 523.11, 783.84 and 276.31

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Solution

The fourth proportional to 523.11, 783.84 and 276.31 is: 414.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    523.11 : 783.84 = 276.31 : x
  2. Step 2: Convert to fraction form
    523.11/783.84 = 276.31/x
  3. Step 3: Cross multiply
    523.11x = 783.84 × 276.31
  4. Step 4: Simplify right side
    523.11x = 216,579.83
  5. Step 5: Solve for x
    x = 216,579.83/523.11
  6. Step 6: Final answer
    x = 414.02

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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.