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Finding the Fourth Proportional to 611.56, 913.03 and 554.14

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Solution

The fourth proportional to 611.56, 913.03 and 554.14 is: 827.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.56 : 913.03 = 554.14 : x
  2. Step 2: Convert to fraction form
    611.56/913.03 = 554.14/x
  3. Step 3: Cross multiply
    611.56x = 913.03 × 554.14
  4. Step 4: Simplify right side
    611.56x = 505,946.44
  5. Step 5: Solve for x
    x = 505,946.44/611.56
  6. Step 6: Final answer
    x = 827.30

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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.