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Finding the Fourth Proportional to 536.82, 805.41 and 440.70

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Solution

The fourth proportional to 536.82, 805.41 and 440.70 is: 661.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.82 : 805.41 = 440.70 : x
  2. Step 2: Convert to fraction form
    536.82/805.41 = 440.70/x
  3. Step 3: Cross multiply
    536.82x = 805.41 × 440.70
  4. Step 4: Simplify right side
    536.82x = 354,944.19
  5. Step 5: Solve for x
    x = 354,944.19/536.82
  6. Step 6: Final answer
    x = 661.20

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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.