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Finding the Fourth Proportional to 884.18, 1,221.17 and 603.95

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Solution

The fourth proportional to 884.18, 1,221.17 and 603.95 is: 834.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    884.18 : 1,221.17 = 603.95 : x
  2. Step 2: Convert to fraction form
    884.18/1,221.17 = 603.95/x
  3. Step 3: Cross multiply
    884.18x = 1,221.17 × 603.95
  4. Step 4: Simplify right side
    884.18x = 737,516.50
  5. Step 5: Solve for x
    x = 737,516.50/884.18
  6. Step 6: Final answer
    x = 834.13

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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.