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Finding the Fourth Proportional to 833.07, 1,149.12 and 538.55

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Solution

The fourth proportional to 833.07, 1,149.12 and 538.55 is: 742.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    833.07 : 1,149.12 = 538.55 : x
  2. Step 2: Convert to fraction form
    833.07/1,149.12 = 538.55/x
  3. Step 3: Cross multiply
    833.07x = 1,149.12 × 538.55
  4. Step 4: Simplify right side
    833.07x = 618,852.83
  5. Step 5: Solve for x
    x = 618,852.83/833.07
  6. Step 6: Final answer
    x = 742.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.