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Finding the Fourth Proportional to 965.51, 1,333.51 and 635.41

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Solution

The fourth proportional to 965.51, 1,333.51 and 635.41 is: 877.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    965.51 : 1,333.51 = 635.41 : x
  2. Step 2: Convert to fraction form
    965.51/1,333.51 = 635.41/x
  3. Step 3: Cross multiply
    965.51x = 1,333.51 × 635.41
  4. Step 4: Simplify right side
    965.51x = 847,329.24
  5. Step 5: Solve for x
    x = 847,329.24/965.51
  6. Step 6: Final answer
    x = 877.60

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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.