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Finding the Fourth Proportional to 439.26, 605.93 and 284.01

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Solution

The fourth proportional to 439.26, 605.93 and 284.01 is: 391.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.26 : 605.93 = 284.01 : x
  2. Step 2: Convert to fraction form
    439.26/605.93 = 284.01/x
  3. Step 3: Cross multiply
    439.26x = 605.93 × 284.01
  4. Step 4: Simplify right side
    439.26x = 172,088.76
  5. Step 5: Solve for x
    x = 172,088.76/439.26
  6. Step 6: Final answer
    x = 391.77

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.