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Finding the Fourth Proportional to 884.61, 1,325.12 and 445.59

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Solution

The fourth proportional to 884.61, 1,325.12 and 445.59 is: 667.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    884.61 : 1,325.12 = 445.59 : x
  2. Step 2: Convert to fraction form
    884.61/1,325.12 = 445.59/x
  3. Step 3: Cross multiply
    884.61x = 1,325.12 × 445.59
  4. Step 4: Simplify right side
    884.61x = 590,457.99
  5. Step 5: Solve for x
    x = 590,457.99/884.61
  6. Step 6: Final answer
    x = 667.48

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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.