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Finding the Fourth Proportional to 1,202.13, 1,803.21 and 336.39

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Solution

The fourth proportional to 1,202.13, 1,803.21 and 336.39 is: 504.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,202.13 : 1,803.21 = 336.39 : x
  2. Step 2: Convert to fraction form
    1,202.13/1,803.21 = 336.39/x
  3. Step 3: Cross multiply
    1,202.13x = 1,803.21 × 336.39
  4. Step 4: Simplify right side
    1,202.13x = 606,581.81
  5. Step 5: Solve for x
    x = 606,581.81/1,202.13
  6. Step 6: Final answer
    x = 504.59

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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.