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Finding the Fourth Proportional to 888.20, 1,331.37 and 302.99

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Solution

The fourth proportional to 888.20, 1,331.37 and 302.99 is: 454.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.20 : 1,331.37 = 302.99 : x
  2. Step 2: Convert to fraction form
    888.20/1,331.37 = 302.99/x
  3. Step 3: Cross multiply
    888.20x = 1,331.37 × 302.99
  4. Step 4: Simplify right side
    888.20x = 403,385.14
  5. Step 5: Solve for x
    x = 403,385.14/888.20
  6. Step 6: Final answer
    x = 454.16

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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.