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Finding the Fourth Proportional to 299.70, 446.58 and 285.93

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Solution

The fourth proportional to 299.70, 446.58 and 285.93 is: 426.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.70 : 446.58 = 285.93 : x
  2. Step 2: Convert to fraction form
    299.70/446.58 = 285.93/x
  3. Step 3: Cross multiply
    299.70x = 446.58 × 285.93
  4. Step 4: Simplify right side
    299.70x = 127,690.62
  5. Step 5: Solve for x
    x = 127,690.62/299.70
  6. Step 6: Final answer
    x = 426.06

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.