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Finding the Fourth Proportional to 852.22, 1,176.04 and 520.64

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Solution

The fourth proportional to 852.22, 1,176.04 and 520.64 is: 718.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    852.22 : 1,176.04 = 520.64 : x
  2. Step 2: Convert to fraction form
    852.22/1,176.04 = 520.64/x
  3. Step 3: Cross multiply
    852.22x = 1,176.04 × 520.64
  4. Step 4: Simplify right side
    852.22x = 612,293.47
  5. Step 5: Solve for x
    x = 612,293.47/852.22
  6. Step 6: Final answer
    x = 718.47

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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.