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Finding the Fourth Proportional to 370.08, 555.14 and 215.89

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Solution

The fourth proportional to 370.08, 555.14 and 215.89 is: 323.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.08 : 555.14 = 215.89 : x
  2. Step 2: Convert to fraction form
    370.08/555.14 = 215.89/x
  3. Step 3: Cross multiply
    370.08x = 555.14 × 215.89
  4. Step 4: Simplify right side
    370.08x = 119,849.58
  5. Step 5: Solve for x
    x = 119,849.58/370.08
  6. Step 6: Final answer
    x = 323.85

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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.