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Finding the Fourth Proportional to 2,359.76, 3,539.40 and 628.52

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Solution

The fourth proportional to 2,359.76, 3,539.40 and 628.52 is: 942.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,359.76 : 3,539.40 = 628.52 : x
  2. Step 2: Convert to fraction form
    2,359.76/3,539.40 = 628.52/x
  3. Step 3: Cross multiply
    2,359.76x = 3,539.40 × 628.52
  4. Step 4: Simplify right side
    2,359.76x = 2,224,583.69
  5. Step 5: Solve for x
    x = 2,224,583.69/2,359.76
  6. Step 6: Final answer
    x = 942.72

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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.