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Finding the Fourth Proportional to 893.98, 1,233.65 and 495.63

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Solution

The fourth proportional to 893.98, 1,233.65 and 495.63 is: 683.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.98 : 1,233.65 = 495.63 : x
  2. Step 2: Convert to fraction form
    893.98/1,233.65 = 495.63/x
  3. Step 3: Cross multiply
    893.98x = 1,233.65 × 495.63
  4. Step 4: Simplify right side
    893.98x = 611,433.95
  5. Step 5: Solve for x
    x = 611,433.95/893.98
  6. Step 6: Final answer
    x = 683.95

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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.