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Finding the Fourth Proportional to 893.99, 1,233.78 and 501.05

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Solution

The fourth proportional to 893.99, 1,233.78 and 501.05 is: 691.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.99 : 1,233.78 = 501.05 : x
  2. Step 2: Convert to fraction form
    893.99/1,233.78 = 501.05/x
  3. Step 3: Cross multiply
    893.99x = 1,233.78 × 501.05
  4. Step 4: Simplify right side
    893.99x = 618,185.47
  5. Step 5: Solve for x
    x = 618,185.47/893.99
  6. Step 6: Final answer
    x = 691.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.