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Finding the Fourth Proportional to 694.55, 958.40 and 458.99

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Solution

The fourth proportional to 694.55, 958.40 and 458.99 is: 633.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.55 : 958.40 = 458.99 : x
  2. Step 2: Convert to fraction form
    694.55/958.40 = 458.99/x
  3. Step 3: Cross multiply
    694.55x = 958.40 × 458.99
  4. Step 4: Simplify right side
    694.55x = 439,896.12
  5. Step 5: Solve for x
    x = 439,896.12/694.55
  6. Step 6: Final answer
    x = 633.35

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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.