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Finding the Fourth Proportional to 520.36, 717.62 and 450.38

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Solution

The fourth proportional to 520.36, 717.62 and 450.38 is: 621.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.36 : 717.62 = 450.38 : x
  2. Step 2: Convert to fraction form
    520.36/717.62 = 450.38/x
  3. Step 3: Cross multiply
    520.36x = 717.62 × 450.38
  4. Step 4: Simplify right side
    520.36x = 323,201.24
  5. Step 5: Solve for x
    x = 323,201.24/520.36
  6. Step 6: Final answer
    x = 621.11

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.