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Finding the Fourth Proportional to 833.62, 1,150.35 and 479.29

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Solution

The fourth proportional to 833.62, 1,150.35 and 479.29 is: 661.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    833.62 : 1,150.35 = 479.29 : x
  2. Step 2: Convert to fraction form
    833.62/1,150.35 = 479.29/x
  3. Step 3: Cross multiply
    833.62x = 1,150.35 × 479.29
  4. Step 4: Simplify right side
    833.62x = 551,351.25
  5. Step 5: Solve for x
    x = 551,351.25/833.62
  6. Step 6: Final answer
    x = 661.40

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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.