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Finding the Fourth Proportional to 963.69, 1,441.88 and 655.68

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Solution

The fourth proportional to 963.69, 1,441.88 and 655.68 is: 981.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    963.69 : 1,441.88 = 655.68 : x
  2. Step 2: Convert to fraction form
    963.69/1,441.88 = 655.68/x
  3. Step 3: Cross multiply
    963.69x = 1,441.88 × 655.68
  4. Step 4: Simplify right side
    963.69x = 945,411.88
  5. Step 5: Solve for x
    x = 945,411.88/963.69
  6. Step 6: Final answer
    x = 981.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.