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Finding the Fourth Proportional to 376.48, 564.80 and 120

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Solution

The fourth proportional to 376.48, 564.80 and 120 is: 180.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.48 : 564.80 = 120 : x
  2. Step 2: Convert to fraction form
    376.48/564.80 = 120/x
  3. Step 3: Cross multiply
    376.48x = 564.80 × 120
  4. Step 4: Simplify right side
    376.48x = 67,776
  5. Step 5: Solve for x
    x = 67,776/376.48
  6. Step 6: Final answer
    x = 180.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.