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Finding the Fourth Proportional to 536.94, 740.61 and 389.25

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Solution

The fourth proportional to 536.94, 740.61 and 389.25 is: 536.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.94 : 740.61 = 389.25 : x
  2. Step 2: Convert to fraction form
    536.94/740.61 = 389.25/x
  3. Step 3: Cross multiply
    536.94x = 740.61 × 389.25
  4. Step 4: Simplify right side
    536.94x = 288,282.44
  5. Step 5: Solve for x
    x = 288,282.44/536.94
  6. Step 6: Final answer
    x = 536.90

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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.