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Finding the Fourth Proportional to 694.86, 958.98 and 400.08

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Solution

The fourth proportional to 694.86, 958.98 and 400.08 is: 552.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.86 : 958.98 = 400.08 : x
  2. Step 2: Convert to fraction form
    694.86/958.98 = 400.08/x
  3. Step 3: Cross multiply
    694.86x = 958.98 × 400.08
  4. Step 4: Simplify right side
    694.86x = 383,668.72
  5. Step 5: Solve for x
    x = 383,668.72/694.86
  6. Step 6: Final answer
    x = 552.15

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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.