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Finding the Fourth Proportional to 886.35, 1,223.13 and 493.37

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Solution

The fourth proportional to 886.35, 1,223.13 and 493.37 is: 680.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    886.35 : 1,223.13 = 493.37 : x
  2. Step 2: Convert to fraction form
    886.35/1,223.13 = 493.37/x
  3. Step 3: Cross multiply
    886.35x = 1,223.13 × 493.37
  4. Step 4: Simplify right side
    886.35x = 603,449.53
  5. Step 5: Solve for x
    x = 603,449.53/886.35
  6. Step 6: Final answer
    x = 680.83

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.