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Finding the Fourth Proportional to 847.80, 1,162.52 and 818.51

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Solution

The fourth proportional to 847.80, 1,162.52 and 818.51 is: 1,122.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    847.80 : 1,162.52 = 818.51 : x
  2. Step 2: Convert to fraction form
    847.80/1,162.52 = 818.51/x
  3. Step 3: Cross multiply
    847.80x = 1,162.52 × 818.51
  4. Step 4: Simplify right side
    847.80x = 951,527.41
  5. Step 5: Solve for x
    x = 951,527.41/847.80
  6. Step 6: Final answer
    x = 1,122.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.