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Finding the Fourth Proportional to 898.82, 1,236.74 and 877.22

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Solution

The fourth proportional to 898.82, 1,236.74 and 877.22 is: 1,207.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    898.82 : 1,236.74 = 877.22 : x
  2. Step 2: Convert to fraction form
    898.82/1,236.74 = 877.22/x
  3. Step 3: Cross multiply
    898.82x = 1,236.74 × 877.22
  4. Step 4: Simplify right side
    898.82x = 1,084,893.06
  5. Step 5: Solve for x
    x = 1,084,893.06/898.82
  6. Step 6: Final answer
    x = 1,207.02

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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.