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Finding the Fourth Proportional to 554.31, 827.40 and 481.70

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Solution

The fourth proportional to 554.31, 827.40 and 481.70 is: 719.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.31 : 827.40 = 481.70 : x
  2. Step 2: Convert to fraction form
    554.31/827.40 = 481.70/x
  3. Step 3: Cross multiply
    554.31x = 827.40 × 481.70
  4. Step 4: Simplify right side
    554.31x = 398,555.09
  5. Step 5: Solve for x
    x = 398,555.09/554.31
  6. Step 6: Final answer
    x = 719.01

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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.