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Finding the Fourth Proportional to 660.20, 908.52 and 585.68

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Solution

The fourth proportional to 660.20, 908.52 and 585.68 is: 805.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    660.20 : 908.52 = 585.68 : x
  2. Step 2: Convert to fraction form
    660.20/908.52 = 585.68/x
  3. Step 3: Cross multiply
    660.20x = 908.52 × 585.68
  4. Step 4: Simplify right side
    660.20x = 532,101.99
  5. Step 5: Solve for x
    x = 532,101.99/660.20
  6. Step 6: Final answer
    x = 805.97

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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.