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Finding the Fourth Proportional to 843.66, 1,164.80 and 529.36

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Solution

The fourth proportional to 843.66, 1,164.80 and 529.36 is: 730.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    843.66 : 1,164.80 = 529.36 : x
  2. Step 2: Convert to fraction form
    843.66/1,164.80 = 529.36/x
  3. Step 3: Cross multiply
    843.66x = 1,164.80 × 529.36
  4. Step 4: Simplify right side
    843.66x = 616,593.63
  5. Step 5: Solve for x
    x = 616,593.63/843.66
  6. Step 6: Final answer
    x = 730.85

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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.