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Finding the Fourth Proportional to 852.92, 1,177.08 and 521.25

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Solution

The fourth proportional to 852.92, 1,177.08 and 521.25 is: 719.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    852.92 : 1,177.08 = 521.25 : x
  2. Step 2: Convert to fraction form
    852.92/1,177.08 = 521.25/x
  3. Step 3: Cross multiply
    852.92x = 1,177.08 × 521.25
  4. Step 4: Simplify right side
    852.92x = 613,552.95
  5. Step 5: Solve for x
    x = 613,552.95/852.92
  6. Step 6: Final answer
    x = 719.36

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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.