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Finding the Fourth Proportional to 736.83, 1,101.99 and 427.88

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Solution

The fourth proportional to 736.83, 1,101.99 and 427.88 is: 639.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.83 : 1,101.99 = 427.88 : x
  2. Step 2: Convert to fraction form
    736.83/1,101.99 = 427.88/x
  3. Step 3: Cross multiply
    736.83x = 1,101.99 × 427.88
  4. Step 4: Simplify right side
    736.83x = 471,519.48
  5. Step 5: Solve for x
    x = 471,519.48/736.83
  6. Step 6: Final answer
    x = 639.93

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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.