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Finding the Fourth Proportional to 1,246.84, 1,869.81 and 369.10

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Solution

The fourth proportional to 1,246.84, 1,869.81 and 369.10 is: 553.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246.84 : 1,869.81 = 369.10 : x
  2. Step 2: Convert to fraction form
    1,246.84/1,869.81 = 369.10/x
  3. Step 3: Cross multiply
    1,246.84x = 1,869.81 × 369.10
  4. Step 4: Simplify right side
    1,246.84x = 690,146.87
  5. Step 5: Solve for x
    x = 690,146.87/1,246.84
  6. Step 6: Final answer
    x = 553.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.