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Finding the Fourth Proportional to 694.59, 958.55 and 384.09

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Solution

The fourth proportional to 694.59, 958.55 and 384.09 is: 530.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.59 : 958.55 = 384.09 : x
  2. Step 2: Convert to fraction form
    694.59/958.55 = 384.09/x
  3. Step 3: Cross multiply
    694.59x = 958.55 × 384.09
  4. Step 4: Simplify right side
    694.59x = 368,167.55
  5. Step 5: Solve for x
    x = 368,167.55/694.59
  6. Step 6: Final answer
    x = 530.05

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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.