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Finding the Fourth Proportional to 583.35, 806.18 and 478.28

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Solution

The fourth proportional to 583.35, 806.18 and 478.28 is: 660.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.35 : 806.18 = 478.28 : x
  2. Step 2: Convert to fraction form
    583.35/806.18 = 478.28/x
  3. Step 3: Cross multiply
    583.35x = 806.18 × 478.28
  4. Step 4: Simplify right side
    583.35x = 385,575.14
  5. Step 5: Solve for x
    x = 385,575.14/583.35
  6. Step 6: Final answer
    x = 660.97

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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.