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Finding the Fourth Proportional to 1,015.56, 1,523.14 and 322.12

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Solution

The fourth proportional to 1,015.56, 1,523.14 and 322.12 is: 483.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,015.56 : 1,523.14 = 322.12 : x
  2. Step 2: Convert to fraction form
    1,015.56/1,523.14 = 322.12/x
  3. Step 3: Cross multiply
    1,015.56x = 1,523.14 × 322.12
  4. Step 4: Simplify right side
    1,015.56x = 490,633.86
  5. Step 5: Solve for x
    x = 490,633.86/1,015.56
  6. Step 6: Final answer
    x = 483.12

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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.