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Finding the Fourth Proportional to 1,075.88, 1,483.90 and 744.86

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Solution

The fourth proportional to 1,075.88, 1,483.90 and 744.86 is: 1,027.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,075.88 : 1,483.90 = 744.86 : x
  2. Step 2: Convert to fraction form
    1,075.88/1,483.90 = 744.86/x
  3. Step 3: Cross multiply
    1,075.88x = 1,483.90 × 744.86
  4. Step 4: Simplify right side
    1,075.88x = 1,105,288.47
  5. Step 5: Solve for x
    x = 1,105,288.47/1,075.88
  6. Step 6: Final answer
    x = 1,027.34

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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.