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Finding the Fourth Proportional to 1,791.24, 2,686.82 and 558.66

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Solution

The fourth proportional to 1,791.24, 2,686.82 and 558.66 is: 837.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,791.24 : 2,686.82 = 558.66 : x
  2. Step 2: Convert to fraction form
    1,791.24/2,686.82 = 558.66/x
  3. Step 3: Cross multiply
    1,791.24x = 2,686.82 × 558.66
  4. Step 4: Simplify right side
    1,791.24x = 1,501,018.86
  5. Step 5: Solve for x
    x = 1,501,018.86/1,791.24
  6. Step 6: Final answer
    x = 837.98

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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.