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Finding the Fourth Proportional to 1,080.70, 1,621.04 and 350.38

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Solution

The fourth proportional to 1,080.70, 1,621.04 and 350.38 is: 525.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080.70 : 1,621.04 = 350.38 : x
  2. Step 2: Convert to fraction form
    1,080.70/1,621.04 = 350.38/x
  3. Step 3: Cross multiply
    1,080.70x = 1,621.04 × 350.38
  4. Step 4: Simplify right side
    1,080.70x = 567,980.00
  5. Step 5: Solve for x
    x = 567,980.00/1,080.70
  6. Step 6: Final answer
    x = 525.57

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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.