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Finding the Fourth Proportional to 1,080.35, 1,620.24 and 300.17

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Solution

The fourth proportional to 1,080.35, 1,620.24 and 300.17 is: 450.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080.35 : 1,620.24 = 300.17 : x
  2. Step 2: Convert to fraction form
    1,080.35/1,620.24 = 300.17/x
  3. Step 3: Cross multiply
    1,080.35x = 1,620.24 × 300.17
  4. Step 4: Simplify right side
    1,080.35x = 486,339.34
  5. Step 5: Solve for x
    x = 486,339.34/1,080.35
  6. Step 6: Final answer
    x = 450.17

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1.5x scale

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.