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Finding the Fourth Proportional to 888.39, 1,332.90 and 303.68

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Solution

The fourth proportional to 888.39, 1,332.90 and 303.68 is: 455.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.39 : 1,332.90 = 303.68 : x
  2. Step 2: Convert to fraction form
    888.39/1,332.90 = 303.68/x
  3. Step 3: Cross multiply
    888.39x = 1,332.90 × 303.68
  4. Step 4: Simplify right side
    888.39x = 404,778.40
  5. Step 5: Solve for x
    x = 404,778.40/888.39
  6. Step 6: Final answer
    x = 455.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.