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Finding the Fourth Proportional to 454.76, 626.24 and 330.20

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Solution

The fourth proportional to 454.76, 626.24 and 330.20 is: 454.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.76 : 626.24 = 330.20 : x
  2. Step 2: Convert to fraction form
    454.76/626.24 = 330.20/x
  3. Step 3: Cross multiply
    454.76x = 626.24 × 330.20
  4. Step 4: Simplify right side
    454.76x = 206,784.45
  5. Step 5: Solve for x
    x = 206,784.45/454.76
  6. Step 6: Final answer
    x = 454.71

Related Problems

Find fourth proportional to 227.38, 313.12 and 165.10
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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.