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Finding the Fourth Proportional to 379.30, 564.70 and 377.50

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Solution

The fourth proportional to 379.30, 564.70 and 377.50 is: 562.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.30 : 564.70 = 377.50 : x
  2. Step 2: Convert to fraction form
    379.30/564.70 = 377.50/x
  3. Step 3: Cross multiply
    379.30x = 564.70 × 377.50
  4. Step 4: Simplify right side
    379.30x = 213,174.25
  5. Step 5: Solve for x
    x = 213,174.25/379.30
  6. Step 6: Final answer
    x = 562.02

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.