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Finding the Fourth Proportional to 843.89, 1,164.78 and 529.34

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Solution

The fourth proportional to 843.89, 1,164.78 and 529.34 is: 730.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    843.89 : 1,164.78 = 529.34 : x
  2. Step 2: Convert to fraction form
    843.89/1,164.78 = 529.34/x
  3. Step 3: Cross multiply
    843.89x = 1,164.78 × 529.34
  4. Step 4: Simplify right side
    843.89x = 616,558.82
  5. Step 5: Solve for x
    x = 616,558.82/843.89
  6. Step 6: Final answer
    x = 730.62

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1.5x scale

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.