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Finding the Fourth Proportional to 660.33, 910.62 and 535.82

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Solution

The fourth proportional to 660.33, 910.62 and 535.82 is: 738.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    660.33 : 910.62 = 535.82 : x
  2. Step 2: Convert to fraction form
    660.33/910.62 = 535.82/x
  3. Step 3: Cross multiply
    660.33x = 910.62 × 535.82
  4. Step 4: Simplify right side
    660.33x = 487,923.86
  5. Step 5: Solve for x
    x = 487,923.86/660.33
  6. Step 6: Final answer
    x = 738.91

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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.