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Finding the Fourth Proportional to 1,033.68, 1,550.40 and 303.20

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Solution

The fourth proportional to 1,033.68, 1,550.40 and 303.20 is: 454.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,033.68 : 1,550.40 = 303.20 : x
  2. Step 2: Convert to fraction form
    1,033.68/1,550.40 = 303.20/x
  3. Step 3: Cross multiply
    1,033.68x = 1,550.40 × 303.20
  4. Step 4: Simplify right side
    1,033.68x = 470,081.28
  5. Step 5: Solve for x
    x = 470,081.28/1,033.68
  6. Step 6: Final answer
    x = 454.76

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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.