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Finding the Fourth Proportional to 548.90, 756.19 and 382.81

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Solution

The fourth proportional to 548.90, 756.19 and 382.81 is: 527.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.90 : 756.19 = 382.81 : x
  2. Step 2: Convert to fraction form
    548.90/756.19 = 382.81/x
  3. Step 3: Cross multiply
    548.90x = 756.19 × 382.81
  4. Step 4: Simplify right side
    548.90x = 289,477.09
  5. Step 5: Solve for x
    x = 289,477.09/548.90
  6. Step 6: Final answer
    x = 527.38

Related Problems

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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.