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Finding the Fourth Proportional to 887.22, 1,336.10 and 742.37

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Solution

The fourth proportional to 887.22, 1,336.10 and 742.37 is: 1,117.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.22 : 1,336.10 = 742.37 : x
  2. Step 2: Convert to fraction form
    887.22/1,336.10 = 742.37/x
  3. Step 3: Cross multiply
    887.22x = 1,336.10 × 742.37
  4. Step 4: Simplify right side
    887.22x = 991,870.16
  5. Step 5: Solve for x
    x = 991,870.16/887.22
  6. Step 6: Final answer
    x = 1,117.95

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.