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Finding the Fourth Proportional to 370.95, 555.90 and 154.68

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Solution

The fourth proportional to 370.95, 555.90 and 154.68 is: 231.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.95 : 555.90 = 154.68 : x
  2. Step 2: Convert to fraction form
    370.95/555.90 = 154.68/x
  3. Step 3: Cross multiply
    370.95x = 555.90 × 154.68
  4. Step 4: Simplify right side
    370.95x = 85,986.61
  5. Step 5: Solve for x
    x = 85,986.61/370.95
  6. Step 6: Final answer
    x = 231.80

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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.