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Finding the Fourth Proportional to 898.88, 1,241.27 and 677.45

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Solution

The fourth proportional to 898.88, 1,241.27 and 677.45 is: 935.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    898.88 : 1,241.27 = 677.45 : x
  2. Step 2: Convert to fraction form
    898.88/1,241.27 = 677.45/x
  3. Step 3: Cross multiply
    898.88x = 1,241.27 × 677.45
  4. Step 4: Simplify right side
    898.88x = 840,898.36
  5. Step 5: Solve for x
    x = 840,898.36/898.88
  6. Step 6: Final answer
    x = 935.50

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Double scale
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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.