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Finding the Fourth Proportional to 1,080.93, 1,621.40 and 533.01

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Solution

The fourth proportional to 1,080.93, 1,621.40 and 533.01 is: 799.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080.93 : 1,621.40 = 533.01 : x
  2. Step 2: Convert to fraction form
    1,080.93/1,621.40 = 533.01/x
  3. Step 3: Cross multiply
    1,080.93x = 1,621.40 × 533.01
  4. Step 4: Simplify right side
    1,080.93x = 864,219.75
  5. Step 5: Solve for x
    x = 864,219.75/1,080.93
  6. Step 6: Final answer
    x = 799.52

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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.