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Finding the Fourth Proportional to 852.19, 1,175.82 and 479.09

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Solution

The fourth proportional to 852.19, 1,175.82 and 479.09 is: 661.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    852.19 : 1,175.82 = 479.09 : x
  2. Step 2: Convert to fraction form
    852.19/1,175.82 = 479.09/x
  3. Step 3: Cross multiply
    852.19x = 1,175.82 × 479.09
  4. Step 4: Simplify right side
    852.19x = 563,324.75
  5. Step 5: Solve for x
    x = 563,324.75/852.19
  6. Step 6: Final answer
    x = 661.03

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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.