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Finding the Fourth Proportional to 1,080.25, 1,477.91 and 1,075.63

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Solution

The fourth proportional to 1,080.25, 1,477.91 and 1,075.63 is: 1,471.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080.25 : 1,477.91 = 1,075.63 : x
  2. Step 2: Convert to fraction form
    1,080.25/1,477.91 = 1,075.63/x
  3. Step 3: Cross multiply
    1,080.25x = 1,477.91 × 1,075.63
  4. Step 4: Simplify right side
    1,080.25x = 1,589,684.33
  5. Step 5: Solve for x
    x = 1,589,684.33/1,080.25
  6. Step 6: Final answer
    x = 1,471.59

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.