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Finding the Fourth Proportional to 1,709.61, 2,359.09 and 963.50

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Solution

The fourth proportional to 1,709.61, 2,359.09 and 963.50 is: 1,329.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,709.61 : 2,359.09 = 963.50 : x
  2. Step 2: Convert to fraction form
    1,709.61/2,359.09 = 963.50/x
  3. Step 3: Cross multiply
    1,709.61x = 2,359.09 × 963.50
  4. Step 4: Simplify right side
    1,709.61x = 2,272,972.62
  5. Step 5: Solve for x
    x = 2,272,972.62/1,709.61
  6. Step 6: Final answer
    x = 1,329.53

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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.