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Finding the Fourth Proportional to 462.46, 694.09 and 390.37

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Solution

The fourth proportional to 462.46, 694.09 and 390.37 is: 585.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    462.46 : 694.09 = 390.37 : x
  2. Step 2: Convert to fraction form
    462.46/694.09 = 390.37/x
  3. Step 3: Cross multiply
    462.46x = 694.09 × 390.37
  4. Step 4: Simplify right side
    462.46x = 270,950.67
  5. Step 5: Solve for x
    x = 270,950.67/462.46
  6. Step 6: Final answer
    x = 585.89

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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.