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Finding the Fourth Proportional to 536.55, 804.31 and 189.65

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Solution

The fourth proportional to 536.55, 804.31 and 189.65 is: 284.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.55 : 804.31 = 189.65 : x
  2. Step 2: Convert to fraction form
    536.55/804.31 = 189.65/x
  3. Step 3: Cross multiply
    536.55x = 804.31 × 189.65
  4. Step 4: Simplify right side
    536.55x = 152,538.93
  5. Step 5: Solve for x
    x = 152,538.93/536.55
  6. Step 6: Final answer
    x = 284.30

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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.