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Finding the Fourth Proportional to 1,015.40, 1,522.42 and 366.05

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Solution

The fourth proportional to 1,015.40, 1,522.42 and 366.05 is: 548.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,015.40 : 1,522.42 = 366.05 : x
  2. Step 2: Convert to fraction form
    1,015.40/1,522.42 = 366.05/x
  3. Step 3: Cross multiply
    1,015.40x = 1,522.42 × 366.05
  4. Step 4: Simplify right side
    1,015.40x = 557,280.01
  5. Step 5: Solve for x
    x = 557,280.01/1,015.40
  6. Step 6: Final answer
    x = 548.83

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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.