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Finding the Fourth Proportional to 888.16, 1,226.20 and 626.44

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Solution

The fourth proportional to 888.16, 1,226.20 and 626.44 is: 864.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.16 : 1,226.20 = 626.44 : x
  2. Step 2: Convert to fraction form
    888.16/1,226.20 = 626.44/x
  3. Step 3: Cross multiply
    888.16x = 1,226.20 × 626.44
  4. Step 4: Simplify right side
    888.16x = 768,140.73
  5. Step 5: Solve for x
    x = 768,140.73/888.16
  6. Step 6: Final answer
    x = 864.87

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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.