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Finding the Fourth Proportional to 583.32, 874.44 and 439.68

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Solution

The fourth proportional to 583.32, 874.44 and 439.68 is: 659.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.32 : 874.44 = 439.68 : x
  2. Step 2: Convert to fraction form
    583.32/874.44 = 439.68/x
  3. Step 3: Cross multiply
    583.32x = 874.44 × 439.68
  4. Step 4: Simplify right side
    583.32x = 384,473.78
  5. Step 5: Solve for x
    x = 384,473.78/583.32
  6. Step 6: Final answer
    x = 659.11

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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.