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Finding the Fourth Proportional to 536.80, 740.80 and 303.92

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Solution

The fourth proportional to 536.80, 740.80 and 303.92 is: 419.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.80 : 740.80 = 303.92 : x
  2. Step 2: Convert to fraction form
    536.80/740.80 = 303.92/x
  3. Step 3: Cross multiply
    536.80x = 740.80 × 303.92
  4. Step 4: Simplify right side
    536.80x = 225,143.94
  5. Step 5: Solve for x
    x = 225,143.94/536.80
  6. Step 6: Final answer
    x = 419.42

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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.