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Finding the Fourth Proportional to 852.80, 1,175.54 and 713.38

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Solution

The fourth proportional to 852.80, 1,175.54 and 713.38 is: 983.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    852.80 : 1,175.54 = 713.38 : x
  2. Step 2: Convert to fraction form
    852.80/1,175.54 = 713.38/x
  3. Step 3: Cross multiply
    852.80x = 1,175.54 × 713.38
  4. Step 4: Simplify right side
    852.80x = 838,606.73
  5. Step 5: Solve for x
    x = 838,606.73/852.80
  6. Step 6: Final answer
    x = 983.36

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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.