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Finding the Fourth Proportional to 536.98, 740.73 and 389.44

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Solution

The fourth proportional to 536.98, 740.73 and 389.44 is: 537.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.98 : 740.73 = 389.44 : x
  2. Step 2: Convert to fraction form
    536.98/740.73 = 389.44/x
  3. Step 3: Cross multiply
    536.98x = 740.73 × 389.44
  4. Step 4: Simplify right side
    536.98x = 288,469.89
  5. Step 5: Solve for x
    x = 288,469.89/536.98
  6. Step 6: Final answer
    x = 537.21

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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.