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Finding the Fourth Proportional to 962.35, 1,441.80 and 345.66

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Solution

The fourth proportional to 962.35, 1,441.80 and 345.66 is: 517.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    962.35 : 1,441.80 = 345.66 : x
  2. Step 2: Convert to fraction form
    962.35/1,441.80 = 345.66/x
  3. Step 3: Cross multiply
    962.35x = 1,441.80 × 345.66
  4. Step 4: Simplify right side
    962.35x = 498,367.18
  5. Step 5: Solve for x
    x = 498,367.18/962.35
  6. Step 6: Final answer
    x = 517.87

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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.