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Finding the Fourth Proportional to 852.24, 1,176.12 and 813.36

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Solution

The fourth proportional to 852.24, 1,176.12 and 813.36 is: 1,122.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    852.24 : 1,176.12 = 813.36 : x
  2. Step 2: Convert to fraction form
    852.24/1,176.12 = 813.36/x
  3. Step 3: Cross multiply
    852.24x = 1,176.12 × 813.36
  4. Step 4: Simplify right side
    852.24x = 956,608.96
  5. Step 5: Solve for x
    x = 956,608.96/852.24
  6. Step 6: Final answer
    x = 1,122.46

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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.