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Finding the Fourth Proportional to 520.94, 719.43 and 450.66

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Solution

The fourth proportional to 520.94, 719.43 and 450.66 is: 622.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.94 : 719.43 = 450.66 : x
  2. Step 2: Convert to fraction form
    520.94/719.43 = 450.66/x
  3. Step 3: Cross multiply
    520.94x = 719.43 × 450.66
  4. Step 4: Simplify right side
    520.94x = 324,218.32
  5. Step 5: Solve for x
    x = 324,218.32/520.94
  6. Step 6: Final answer
    x = 622.38

Related Problems

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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.