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Finding the Fourth Proportional to 893.28, 1,340.13 and 372.99

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Solution

The fourth proportional to 893.28, 1,340.13 and 372.99 is: 559.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.28 : 1,340.13 = 372.99 : x
  2. Step 2: Convert to fraction form
    893.28/1,340.13 = 372.99/x
  3. Step 3: Cross multiply
    893.28x = 1,340.13 × 372.99
  4. Step 4: Simplify right side
    893.28x = 499,846.52
  5. Step 5: Solve for x
    x = 499,846.52/893.28
  6. Step 6: Final answer
    x = 559.57

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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.