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Finding the Fourth Proportional to 805.95, 1,203.09 and 745.83

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Solution

The fourth proportional to 805.95, 1,203.09 and 745.83 is: 1,113.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    805.95 : 1,203.09 = 745.83 : x
  2. Step 2: Convert to fraction form
    805.95/1,203.09 = 745.83/x
  3. Step 3: Cross multiply
    805.95x = 1,203.09 × 745.83
  4. Step 4: Simplify right side
    805.95x = 897,300.61
  5. Step 5: Solve for x
    x = 897,300.61/805.95
  6. Step 6: Final answer
    x = 1,113.35

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.