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Finding the Fourth Proportional to 1,437.10, 2,155.71 and 463.21

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Solution

The fourth proportional to 1,437.10, 2,155.71 and 463.21 is: 694.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,437.10 : 2,155.71 = 463.21 : x
  2. Step 2: Convert to fraction form
    1,437.10/2,155.71 = 463.21/x
  3. Step 3: Cross multiply
    1,437.10x = 2,155.71 × 463.21
  4. Step 4: Simplify right side
    1,437.10x = 998,546.43
  5. Step 5: Solve for x
    x = 998,546.43/1,437.10
  6. Step 6: Final answer
    x = 694.83

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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.