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Finding the Fourth Proportional to 536.88, 740.61 and 389.26

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Solution

The fourth proportional to 536.88, 740.61 and 389.26 is: 536.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.88 : 740.61 = 389.26 : x
  2. Step 2: Convert to fraction form
    536.88/740.61 = 389.26/x
  3. Step 3: Cross multiply
    536.88x = 740.61 × 389.26
  4. Step 4: Simplify right side
    536.88x = 288,289.85
  5. Step 5: Solve for x
    x = 288,289.85/536.88
  6. Step 6: Final answer
    x = 536.97

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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.