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Finding the Fourth Proportional to 422.76, 583.46 and 236.28

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Solution

The fourth proportional to 422.76, 583.46 and 236.28 is: 326.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    422.76 : 583.46 = 236.28 : x
  2. Step 2: Convert to fraction form
    422.76/583.46 = 236.28/x
  3. Step 3: Cross multiply
    422.76x = 583.46 × 236.28
  4. Step 4: Simplify right side
    422.76x = 137,859.93
  5. Step 5: Solve for x
    x = 137,859.93/422.76
  6. Step 6: Final answer
    x = 326.10

Related Problems

Find fourth proportional to 211.38, 291.73 and 118.14
Half scale
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Double scale
Find fourth proportional to 423.76, 584.84 and 237.28
Similar ratio
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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.