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Finding the Fourth Proportional to 965.95, 1,333.59 and 634.96

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Solution

The fourth proportional to 965.95, 1,333.59 and 634.96 is: 876.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    965.95 : 1,333.59 = 634.96 : x
  2. Step 2: Convert to fraction form
    965.95/1,333.59 = 634.96/x
  3. Step 3: Cross multiply
    965.95x = 1,333.59 × 634.96
  4. Step 4: Simplify right side
    965.95x = 846,776.31
  5. Step 5: Solve for x
    x = 846,776.31/965.95
  6. Step 6: Final answer
    x = 876.63

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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.