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Finding the Fourth Proportional to 736.20, 1,015.54 and 441.30

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Solution

The fourth proportional to 736.20, 1,015.54 and 441.30 is: 608.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.20 : 1,015.54 = 441.30 : x
  2. Step 2: Convert to fraction form
    736.20/1,015.54 = 441.30/x
  3. Step 3: Cross multiply
    736.20x = 1,015.54 × 441.30
  4. Step 4: Simplify right side
    736.20x = 448,156.70
  5. Step 5: Solve for x
    x = 448,156.70/736.20
  6. Step 6: Final answer
    x = 608.74

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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.