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Finding the Fourth Proportional to 1,334.76, 1,841.75 and 745.30

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Solution

The fourth proportional to 1,334.76, 1,841.75 and 745.30 is: 1,028.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,334.76 : 1,841.75 = 745.30 : x
  2. Step 2: Convert to fraction form
    1,334.76/1,841.75 = 745.30/x
  3. Step 3: Cross multiply
    1,334.76x = 1,841.75 × 745.30
  4. Step 4: Simplify right side
    1,334.76x = 1,372,647.94
  5. Step 5: Solve for x
    x = 1,372,647.94/1,334.76
  6. Step 6: Final answer
    x = 1,028.39

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1.5x scale

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.