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Finding the Fourth Proportional to 893.81, 1,340.89 and 633.89

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Solution

The fourth proportional to 893.81, 1,340.89 and 633.89 is: 950.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.81 : 1,340.89 = 633.89 : x
  2. Step 2: Convert to fraction form
    893.81/1,340.89 = 633.89/x
  3. Step 3: Cross multiply
    893.81x = 1,340.89 × 633.89
  4. Step 4: Simplify right side
    893.81x = 849,978.53
  5. Step 5: Solve for x
    x = 849,978.53/893.81
  6. Step 6: Final answer
    x = 950.96

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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.