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Finding the Fourth Proportional to 910.28, 1,365.42 and 333.02

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Solution

The fourth proportional to 910.28, 1,365.42 and 333.02 is: 499.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    910.28 : 1,365.42 = 333.02 : x
  2. Step 2: Convert to fraction form
    910.28/1,365.42 = 333.02/x
  3. Step 3: Cross multiply
    910.28x = 1,365.42 × 333.02
  4. Step 4: Simplify right side
    910.28x = 454,712.17
  5. Step 5: Solve for x
    x = 454,712.17/910.28
  6. Step 6: Final answer
    x = 499.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.