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Finding the Fourth Proportional to 833.35, 1,149.15 and 553.49

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Solution

The fourth proportional to 833.35, 1,149.15 and 553.49 is: 763.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    833.35 : 1,149.15 = 553.49 : x
  2. Step 2: Convert to fraction form
    833.35/1,149.15 = 553.49/x
  3. Step 3: Cross multiply
    833.35x = 1,149.15 × 553.49
  4. Step 4: Simplify right side
    833.35x = 636,043.03
  5. Step 5: Solve for x
    x = 636,043.03/833.35
  6. Step 6: Final answer
    x = 763.24

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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.