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Finding the Fourth Proportional to 393.42, 588.98 and 367.77

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Solution

The fourth proportional to 393.42, 588.98 and 367.77 is: 550.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    393.42 : 588.98 = 367.77 : x
  2. Step 2: Convert to fraction form
    393.42/588.98 = 367.77/x
  3. Step 3: Cross multiply
    393.42x = 588.98 × 367.77
  4. Step 4: Simplify right side
    393.42x = 216,607.34
  5. Step 5: Solve for x
    x = 216,607.34/393.42
  6. Step 6: Final answer
    x = 550.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.