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Finding the Fourth Proportional to 536.40, 804.96 and 292.80

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Solution

The fourth proportional to 536.40, 804.96 and 292.80 is: 439.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.40 : 804.96 = 292.80 : x
  2. Step 2: Convert to fraction form
    536.40/804.96 = 292.80/x
  3. Step 3: Cross multiply
    536.40x = 804.96 × 292.80
  4. Step 4: Simplify right side
    536.40x = 235,692.29
  5. Step 5: Solve for x
    x = 235,692.29/536.40
  6. Step 6: Final answer
    x = 439.40

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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.