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Finding the Fourth Proportional to 1,463.63, 2,196.19 and 641.91

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Solution

The fourth proportional to 1,463.63, 2,196.19 and 641.91 is: 963.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,463.63 : 2,196.19 = 641.91 : x
  2. Step 2: Convert to fraction form
    1,463.63/2,196.19 = 641.91/x
  3. Step 3: Cross multiply
    1,463.63x = 2,196.19 × 641.91
  4. Step 4: Simplify right side
    1,463.63x = 1,409,756.32
  5. Step 5: Solve for x
    x = 1,409,756.32/1,463.63
  6. Step 6: Final answer
    x = 963.19

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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.