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Finding the Fourth Proportional to 1,628.76, 2,442.53 and 704.25

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Solution

The fourth proportional to 1,628.76, 2,442.53 and 704.25 is: 1,056.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628.76 : 2,442.53 = 704.25 : x
  2. Step 2: Convert to fraction form
    1,628.76/2,442.53 = 704.25/x
  3. Step 3: Cross multiply
    1,628.76x = 2,442.53 × 704.25
  4. Step 4: Simplify right side
    1,628.76x = 1,720,151.75
  5. Step 5: Solve for x
    x = 1,720,151.75/1,628.76
  6. Step 6: Final answer
    x = 1,056.11

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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.