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Finding the Fourth Proportional to 451.36, 621.84 and 377.38

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Solution

The fourth proportional to 451.36, 621.84 and 377.38 is: 519.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.36 : 621.84 = 377.38 : x
  2. Step 2: Convert to fraction form
    451.36/621.84 = 377.38/x
  3. Step 3: Cross multiply
    451.36x = 621.84 × 377.38
  4. Step 4: Simplify right side
    451.36x = 234,669.98
  5. Step 5: Solve for x
    x = 234,669.98/451.36
  6. Step 6: Final answer
    x = 519.92

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.