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Finding the Fourth Proportional to 1,628.22, 2,442.26 and 532.64

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Solution

The fourth proportional to 1,628.22, 2,442.26 and 532.64 is: 798.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628.22 : 2,442.26 = 532.64 : x
  2. Step 2: Convert to fraction form
    1,628.22/2,442.26 = 532.64/x
  3. Step 3: Cross multiply
    1,628.22x = 2,442.26 × 532.64
  4. Step 4: Simplify right side
    1,628.22x = 1,300,845.37
  5. Step 5: Solve for x
    x = 1,300,845.37/1,628.22
  6. Step 6: Final answer
    x = 798.94

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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.