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Finding the Fourth Proportional to 962.84, 1,441.50 and 780.60

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Solution

The fourth proportional to 962.84, 1,441.50 and 780.60 is: 1,168.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    962.84 : 1,441.50 = 780.60 : x
  2. Step 2: Convert to fraction form
    962.84/1,441.50 = 780.60/x
  3. Step 3: Cross multiply
    962.84x = 1,441.50 × 780.60
  4. Step 4: Simplify right side
    962.84x = 1,125,234.90
  5. Step 5: Solve for x
    x = 1,125,234.90/962.84
  6. Step 6: Final answer
    x = 1,168.66

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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.