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Finding the Fourth Proportional to 1,015.56, 1,523.34 and 285.08

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Solution

The fourth proportional to 1,015.56, 1,523.34 and 285.08 is: 427.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,015.56 : 1,523.34 = 285.08 : x
  2. Step 2: Convert to fraction form
    1,015.56/1,523.34 = 285.08/x
  3. Step 3: Cross multiply
    1,015.56x = 1,523.34 × 285.08
  4. Step 4: Simplify right side
    1,015.56x = 434,266.15
  5. Step 5: Solve for x
    x = 434,266.15/1,015.56
  6. Step 6: Final answer
    x = 427.61

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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.