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Finding the Fourth Proportional to 883.11, 1,216.95 and 633.63

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Solution

The fourth proportional to 883.11, 1,216.95 and 633.63 is: 873.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    883.11 : 1,216.95 = 633.63 : x
  2. Step 2: Convert to fraction form
    883.11/1,216.95 = 633.63/x
  3. Step 3: Cross multiply
    883.11x = 1,216.95 × 633.63
  4. Step 4: Simplify right side
    883.11x = 771,092.86
  5. Step 5: Solve for x
    x = 771,092.86/883.11
  6. Step 6: Final answer
    x = 873.16

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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.