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Finding the Fourth Proportional to 894.14, 1,233.96 and 521.36

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Solution

The fourth proportional to 894.14, 1,233.96 and 521.36 is: 719.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.14 : 1,233.96 = 521.36 : x
  2. Step 2: Convert to fraction form
    894.14/1,233.96 = 521.36/x
  3. Step 3: Cross multiply
    894.14x = 1,233.96 × 521.36
  4. Step 4: Simplify right side
    894.14x = 643,337.39
  5. Step 5: Solve for x
    x = 643,337.39/894.14
  6. Step 6: Final answer
    x = 719.50

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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.