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Finding the Fourth Proportional to 886.46, 1,223.36 and 493.47

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Solution

The fourth proportional to 886.46, 1,223.36 and 493.47 is: 681.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    886.46 : 1,223.36 = 493.47 : x
  2. Step 2: Convert to fraction form
    886.46/1,223.36 = 493.47/x
  3. Step 3: Cross multiply
    886.46x = 1,223.36 × 493.47
  4. Step 4: Simplify right side
    886.46x = 603,692.05
  5. Step 5: Solve for x
    x = 603,692.05/886.46
  6. Step 6: Final answer
    x = 681.02

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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.