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Finding the Fourth Proportional to 735.70, 1,103.55 and 447.07

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Solution

The fourth proportional to 735.70, 1,103.55 and 447.07 is: 670.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    735.70 : 1,103.55 = 447.07 : x
  2. Step 2: Convert to fraction form
    735.70/1,103.55 = 447.07/x
  3. Step 3: Cross multiply
    735.70x = 1,103.55 × 447.07
  4. Step 4: Simplify right side
    735.70x = 493,364.10
  5. Step 5: Solve for x
    x = 493,364.10/735.70
  6. Step 6: Final answer
    x = 670.61

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Double scale
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Similar ratio
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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.