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Finding the Fourth Proportional to 541.31, 745.98 and 393.67

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Solution

The fourth proportional to 541.31, 745.98 and 393.67 is: 542.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.31 : 745.98 = 393.67 : x
  2. Step 2: Convert to fraction form
    541.31/745.98 = 393.67/x
  3. Step 3: Cross multiply
    541.31x = 745.98 × 393.67
  4. Step 4: Simplify right side
    541.31x = 293,666.22
  5. Step 5: Solve for x
    x = 293,666.22/541.31
  6. Step 6: Final answer
    x = 542.51

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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.