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Finding the Fourth Proportional to 963.54, 1,445.56 and 338.99

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Solution

The fourth proportional to 963.54, 1,445.56 and 338.99 is: 508.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    963.54 : 1,445.56 = 338.99 : x
  2. Step 2: Convert to fraction form
    963.54/1,445.56 = 338.99/x
  3. Step 3: Cross multiply
    963.54x = 1,445.56 × 338.99
  4. Step 4: Simplify right side
    963.54x = 490,022.31
  5. Step 5: Solve for x
    x = 490,022.31/963.54
  6. Step 6: Final answer
    x = 508.56

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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.