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Finding the Fourth Proportional to 694.39, 958.77 and 458.29

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Solution

The fourth proportional to 694.39, 958.77 and 458.29 is: 632.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.39 : 958.77 = 458.29 : x
  2. Step 2: Convert to fraction form
    694.39/958.77 = 458.29/x
  3. Step 3: Cross multiply
    694.39x = 958.77 × 458.29
  4. Step 4: Simplify right side
    694.39x = 439,394.70
  5. Step 5: Solve for x
    x = 439,394.70/694.39
  6. Step 6: Final answer
    x = 632.78

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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.