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Finding the Fourth Proportional to 370.58, 555.90 and 154.18

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Solution

The fourth proportional to 370.58, 555.90 and 154.18 is: 231.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.58 : 555.90 = 154.18 : x
  2. Step 2: Convert to fraction form
    370.58/555.90 = 154.18/x
  3. Step 3: Cross multiply
    370.58x = 555.90 × 154.18
  4. Step 4: Simplify right side
    370.58x = 85,708.66
  5. Step 5: Solve for x
    x = 85,708.66/370.58
  6. Step 6: Final answer
    x = 231.28

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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.