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Finding the Fourth Proportional to 690.17, 951.96 and 441.38

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Solution

The fourth proportional to 690.17, 951.96 and 441.38 is: 608.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    690.17 : 951.96 = 441.38 : x
  2. Step 2: Convert to fraction form
    690.17/951.96 = 441.38/x
  3. Step 3: Cross multiply
    690.17x = 951.96 × 441.38
  4. Step 4: Simplify right side
    690.17x = 420,180.14
  5. Step 5: Solve for x
    x = 420,180.14/690.17
  6. Step 6: Final answer
    x = 608.81

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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.