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Finding the Fourth Proportional to 1,075.22, 1,484.49 and 677.43

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Solution

The fourth proportional to 1,075.22, 1,484.49 and 677.43 is: 935.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,075.22 : 1,484.49 = 677.43 : x
  2. Step 2: Convert to fraction form
    1,075.22/1,484.49 = 677.43/x
  3. Step 3: Cross multiply
    1,075.22x = 1,484.49 × 677.43
  4. Step 4: Simplify right side
    1,075.22x = 1,005,640.60
  5. Step 5: Solve for x
    x = 1,005,640.60/1,075.22
  6. Step 6: Final answer
    x = 935.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.