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Finding the Fourth Proportional to 704.09, 1,055.23 and 338.23

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Solution

The fourth proportional to 704.09, 1,055.23 and 338.23 is: 506.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    704.09 : 1,055.23 = 338.23 : x
  2. Step 2: Convert to fraction form
    704.09/1,055.23 = 338.23/x
  3. Step 3: Cross multiply
    704.09x = 1,055.23 × 338.23
  4. Step 4: Simplify right side
    704.09x = 356,904.98
  5. Step 5: Solve for x
    x = 356,904.98/704.09
  6. Step 6: Final answer
    x = 506.90

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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.