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Finding the Fourth Proportional to 736.18, 1,015.84 and 441.40

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Solution

The fourth proportional to 736.18, 1,015.84 and 441.40 is: 609.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.18 : 1,015.84 = 441.40 : x
  2. Step 2: Convert to fraction form
    736.18/1,015.84 = 441.40/x
  3. Step 3: Cross multiply
    736.18x = 1,015.84 × 441.40
  4. Step 4: Simplify right side
    736.18x = 448,391.78
  5. Step 5: Solve for x
    x = 448,391.78/736.18
  6. Step 6: Final answer
    x = 609.08

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1.5x scale

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.