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Finding the Fourth Proportional to 736.40, 1,016.15 and 441.66

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Solution

The fourth proportional to 736.40, 1,016.15 and 441.66 is: 609.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.40 : 1,016.15 = 441.66 : x
  2. Step 2: Convert to fraction form
    736.40/1,016.15 = 441.66/x
  3. Step 3: Cross multiply
    736.40x = 1,016.15 × 441.66
  4. Step 4: Simplify right side
    736.40x = 448,792.81
  5. Step 5: Solve for x
    x = 448,792.81/736.40
  6. Step 6: Final answer
    x = 609.44

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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.