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Finding the Fourth Proportional to 660.53, 985.42 and 606.96

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Solution

The fourth proportional to 660.53, 985.42 and 606.96 is: 905.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    660.53 : 985.42 = 606.96 : x
  2. Step 2: Convert to fraction form
    660.53/985.42 = 606.96/x
  3. Step 3: Cross multiply
    660.53x = 985.42 × 606.96
  4. Step 4: Simplify right side
    660.53x = 598,103.71
  5. Step 5: Solve for x
    x = 598,103.71/660.53
  6. Step 6: Final answer
    x = 905.49

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.