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Finding the Fourth Proportional to 1,840.98, 2,761.45 and 745.32

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Solution

The fourth proportional to 1,840.98, 2,761.45 and 745.32 is: 1,117.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,840.98 : 2,761.45 = 745.32 : x
  2. Step 2: Convert to fraction form
    1,840.98/2,761.45 = 745.32/x
  3. Step 3: Cross multiply
    1,840.98x = 2,761.45 × 745.32
  4. Step 4: Simplify right side
    1,840.98x = 2,058,172.41
  5. Step 5: Solve for x
    x = 2,058,172.41/1,840.98
  6. Step 6: Final answer
    x = 1,117.98

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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.