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Finding the Fourth Proportional to 739.54, 1,109.58 and 451.18

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Solution

The fourth proportional to 739.54, 1,109.58 and 451.18 is: 676.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    739.54 : 1,109.58 = 451.18 : x
  2. Step 2: Convert to fraction form
    739.54/1,109.58 = 451.18/x
  3. Step 3: Cross multiply
    739.54x = 1,109.58 × 451.18
  4. Step 4: Simplify right side
    739.54x = 500,612.50
  5. Step 5: Solve for x
    x = 500,612.50/739.54
  6. Step 6: Final answer
    x = 676.93

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1.5x scale

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.