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Finding the Fourth Proportional to 961.37, 1,326.65 and 535.98

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Solution

The fourth proportional to 961.37, 1,326.65 and 535.98 is: 739.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    961.37 : 1,326.65 = 535.98 : x
  2. Step 2: Convert to fraction form
    961.37/1,326.65 = 535.98/x
  3. Step 3: Cross multiply
    961.37x = 1,326.65 × 535.98
  4. Step 4: Simplify right side
    961.37x = 711,055.19
  5. Step 5: Solve for x
    x = 711,055.19/961.37
  6. Step 6: Final answer
    x = 739.63

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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.