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Finding the Fourth Proportional to 690.19, 952.83 and 441.72

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Solution

The fourth proportional to 690.19, 952.83 and 441.72 is: 609.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    690.19 : 952.83 = 441.72 : x
  2. Step 2: Convert to fraction form
    690.19/952.83 = 441.72/x
  3. Step 3: Cross multiply
    690.19x = 952.83 × 441.72
  4. Step 4: Simplify right side
    690.19x = 420,884.07
  5. Step 5: Solve for x
    x = 420,884.07/690.19
  6. Step 6: Final answer
    x = 609.81

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Double scale
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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.