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Finding the Fourth Proportional to 1,361.95, 2,043.20 and 437.44

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Solution

The fourth proportional to 1,361.95, 2,043.20 and 437.44 is: 656.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,361.95 : 2,043.20 = 437.44 : x
  2. Step 2: Convert to fraction form
    1,361.95/2,043.20 = 437.44/x
  3. Step 3: Cross multiply
    1,361.95x = 2,043.20 × 437.44
  4. Step 4: Simplify right side
    1,361.95x = 893,775.22
  5. Step 5: Solve for x
    x = 893,775.22/1,361.95
  6. Step 6: Final answer
    x = 656.25

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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.