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Finding the Fourth Proportional to 833.16, 1,249.75 and 488.90

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Solution

The fourth proportional to 833.16, 1,249.75 and 488.90 is: 733.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    833.16 : 1,249.75 = 488.90 : x
  2. Step 2: Convert to fraction form
    833.16/1,249.75 = 488.90/x
  3. Step 3: Cross multiply
    833.16x = 1,249.75 × 488.90
  4. Step 4: Simplify right side
    833.16x = 611,006.51
  5. Step 5: Solve for x
    x = 611,006.51/833.16
  6. Step 6: Final answer
    x = 733.36

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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.