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Finding the Fourth Proportional to 704.67, 1,055.46 and 608.58

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Solution

The fourth proportional to 704.67, 1,055.46 and 608.58 is: 911.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    704.67 : 1,055.46 = 608.58 : x
  2. Step 2: Convert to fraction form
    704.67/1,055.46 = 608.58/x
  3. Step 3: Cross multiply
    704.67x = 1,055.46 × 608.58
  4. Step 4: Simplify right side
    704.67x = 642,331.85
  5. Step 5: Solve for x
    x = 642,331.85/704.67
  6. Step 6: Final answer
    x = 911.54

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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.