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Finding the Fourth Proportional to 893.75, 1,233.36 and 495.42

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Solution

The fourth proportional to 893.75, 1,233.36 and 495.42 is: 683.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.75 : 1,233.36 = 495.42 : x
  2. Step 2: Convert to fraction form
    893.75/1,233.36 = 495.42/x
  3. Step 3: Cross multiply
    893.75x = 1,233.36 × 495.42
  4. Step 4: Simplify right side
    893.75x = 611,031.21
  5. Step 5: Solve for x
    x = 611,031.21/893.75
  6. Step 6: Final answer
    x = 683.68

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1.5x scale

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.