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Finding the Fourth Proportional to 1,080.30, 1,620.45 and 504.30

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Solution

The fourth proportional to 1,080.30, 1,620.45 and 504.30 is: 756.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080.30 : 1,620.45 = 504.30 : x
  2. Step 2: Convert to fraction form
    1,080.30/1,620.45 = 504.30/x
  3. Step 3: Cross multiply
    1,080.30x = 1,620.45 × 504.30
  4. Step 4: Simplify right side
    1,080.30x = 817,192.94
  5. Step 5: Solve for x
    x = 817,192.94/1,080.30
  6. Step 6: Final answer
    x = 756.45

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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.