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Finding the Fourth Proportional to 833.13, 1,149.87 and 479.02

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Solution

The fourth proportional to 833.13, 1,149.87 and 479.02 is: 661.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    833.13 : 1,149.87 = 479.02 : x
  2. Step 2: Convert to fraction form
    833.13/1,149.87 = 479.02/x
  3. Step 3: Cross multiply
    833.13x = 1,149.87 × 479.02
  4. Step 4: Simplify right side
    833.13x = 550,812.55
  5. Step 5: Solve for x
    x = 550,812.55/833.13
  6. Step 6: Final answer
    x = 661.14

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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.