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Finding the Fourth Proportional to 370.32, 555.28 and 123.42

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Solution

The fourth proportional to 370.32, 555.28 and 123.42 is: 185.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.32 : 555.28 = 123.42 : x
  2. Step 2: Convert to fraction form
    370.32/555.28 = 123.42/x
  3. Step 3: Cross multiply
    370.32x = 555.28 × 123.42
  4. Step 4: Simplify right side
    370.32x = 68,532.66
  5. Step 5: Solve for x
    x = 68,532.66/370.32
  6. Step 6: Final answer
    x = 185.06

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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.