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Finding the Fourth Proportional to 1,363.71, 1,882.70 and 898.77

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Solution

The fourth proportional to 1,363.71, 1,882.70 and 898.77 is: 1,240.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,363.71 : 1,882.70 = 898.77 : x
  2. Step 2: Convert to fraction form
    1,363.71/1,882.70 = 898.77/x
  3. Step 3: Cross multiply
    1,363.71x = 1,882.70 × 898.77
  4. Step 4: Simplify right side
    1,363.71x = 1,692,109.79
  5. Step 5: Solve for x
    x = 1,692,109.79/1,363.71
  6. Step 6: Final answer
    x = 1,240.81

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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.