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Finding the Fourth Proportional to 370.58, 511.20 and 300.71

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Solution

The fourth proportional to 370.58, 511.20 and 300.71 is: 414.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.58 : 511.20 = 300.71 : x
  2. Step 2: Convert to fraction form
    370.58/511.20 = 300.71/x
  3. Step 3: Cross multiply
    370.58x = 511.20 × 300.71
  4. Step 4: Simplify right side
    370.58x = 153,724.23
  5. Step 5: Solve for x
    x = 153,724.23/370.58
  6. Step 6: Final answer
    x = 414.83

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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.