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Finding the Fourth Proportional to 450.77, 622.06 and 243.77

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Solution

The fourth proportional to 450.77, 622.06 and 243.77 is: 336.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.77 : 622.06 = 243.77 : x
  2. Step 2: Convert to fraction form
    450.77/622.06 = 243.77/x
  3. Step 3: Cross multiply
    450.77x = 622.06 × 243.77
  4. Step 4: Simplify right side
    450.77x = 151,635.24
  5. Step 5: Solve for x
    x = 151,635.24/450.77
  6. Step 6: Final answer
    x = 336.40

Related Problems

Find fourth proportional to 225.38, 311.03 and 121.88
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.