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Finding the Fourth Proportional to 894.11, 1,233.99 and 521.18

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Solution

The fourth proportional to 894.11, 1,233.99 and 521.18 is: 719.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.11 : 1,233.99 = 521.18 : x
  2. Step 2: Convert to fraction form
    894.11/1,233.99 = 521.18/x
  3. Step 3: Cross multiply
    894.11x = 1,233.99 × 521.18
  4. Step 4: Simplify right side
    894.11x = 643,130.91
  5. Step 5: Solve for x
    x = 643,130.91/894.11
  6. Step 6: Final answer
    x = 719.30

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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.