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Finding the Fourth Proportional to 829.77, 1,244.88 and 739.10

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Solution

The fourth proportional to 829.77, 1,244.88 and 739.10 is: 1,108.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    829.77 : 1,244.88 = 739.10 : x
  2. Step 2: Convert to fraction form
    829.77/1,244.88 = 739.10/x
  3. Step 3: Cross multiply
    829.77x = 1,244.88 × 739.10
  4. Step 4: Simplify right side
    829.77x = 920,090.81
  5. Step 5: Solve for x
    x = 920,090.81/829.77
  6. Step 6: Final answer
    x = 1,108.85

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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.