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Finding the Fourth Proportional to 833.35, 1,250.06 and 638.63

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Solution

The fourth proportional to 833.35, 1,250.06 and 638.63 is: 957.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    833.35 : 1,250.06 = 638.63 : x
  2. Step 2: Convert to fraction form
    833.35/1,250.06 = 638.63/x
  3. Step 3: Cross multiply
    833.35x = 1,250.06 × 638.63
  4. Step 4: Simplify right side
    833.35x = 798,325.82
  5. Step 5: Solve for x
    x = 798,325.82/833.35
  6. Step 6: Final answer
    x = 957.97

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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.