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Finding the Fourth Proportional to 893.63, 1,339.95 and 308.36

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Solution

The fourth proportional to 893.63, 1,339.95 and 308.36 is: 462.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.63 : 1,339.95 = 308.36 : x
  2. Step 2: Convert to fraction form
    893.63/1,339.95 = 308.36/x
  3. Step 3: Cross multiply
    893.63x = 1,339.95 × 308.36
  4. Step 4: Simplify right side
    893.63x = 413,186.98
  5. Step 5: Solve for x
    x = 413,186.98/893.63
  6. Step 6: Final answer
    x = 462.37

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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.