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Finding the Fourth Proportional to 548.28, 756.02 and 348.76

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Solution

The fourth proportional to 548.28, 756.02 and 348.76 is: 480.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.28 : 756.02 = 348.76 : x
  2. Step 2: Convert to fraction form
    548.28/756.02 = 348.76/x
  3. Step 3: Cross multiply
    548.28x = 756.02 × 348.76
  4. Step 4: Simplify right side
    548.28x = 263,669.54
  5. Step 5: Solve for x
    x = 263,669.54/548.28
  6. Step 6: Final answer
    x = 480.90

Related Problems

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Half scale
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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.