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Finding the Fourth Proportional to 1,163.90, 1,745.51 and 341.98

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Solution

The fourth proportional to 1,163.90, 1,745.51 and 341.98 is: 512.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,163.90 : 1,745.51 = 341.98 : x
  2. Step 2: Convert to fraction form
    1,163.90/1,745.51 = 341.98/x
  3. Step 3: Cross multiply
    1,163.90x = 1,745.51 × 341.98
  4. Step 4: Simplify right side
    1,163.90x = 596,929.51
  5. Step 5: Solve for x
    x = 596,929.51/1,163.90
  6. Step 6: Final answer
    x = 512.87

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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.