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Finding the Fourth Proportional to 439.83, 607.01 and 282.57

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Solution

The fourth proportional to 439.83, 607.01 and 282.57 is: 389.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.83 : 607.01 = 282.57 : x
  2. Step 2: Convert to fraction form
    439.83/607.01 = 282.57/x
  3. Step 3: Cross multiply
    439.83x = 607.01 × 282.57
  4. Step 4: Simplify right side
    439.83x = 171,521.40
  5. Step 5: Solve for x
    x = 171,521.40/439.83
  6. Step 6: Final answer
    x = 389.97

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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.