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Finding the Fourth Proportional to 583.36, 876.64 and 479.68

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Solution

The fourth proportional to 583.36, 876.64 and 479.68 is: 720.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.36 : 876.64 = 479.68 : x
  2. Step 2: Convert to fraction form
    583.36/876.64 = 479.68/x
  3. Step 3: Cross multiply
    583.36x = 876.64 × 479.68
  4. Step 4: Simplify right side
    583.36x = 420,506.68
  5. Step 5: Solve for x
    x = 420,506.68/583.36
  6. Step 6: Final answer
    x = 720.84

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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.