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Finding the Fourth Proportional to 833.83, 1,250.34 and 487.25

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Solution

The fourth proportional to 833.83, 1,250.34 and 487.25 is: 730.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    833.83 : 1,250.34 = 487.25 : x
  2. Step 2: Convert to fraction form
    833.83/1,250.34 = 487.25/x
  3. Step 3: Cross multiply
    833.83x = 1,250.34 × 487.25
  4. Step 4: Simplify right side
    833.83x = 609,231.81
  5. Step 5: Solve for x
    x = 609,231.81/833.83
  6. Step 6: Final answer
    x = 730.64

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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.