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Finding the Fourth Proportional to 619.53, 930.12 and 359.79

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Solution

The fourth proportional to 619.53, 930.12 and 359.79 is: 540.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.53 : 930.12 = 359.79 : x
  2. Step 2: Convert to fraction form
    619.53/930.12 = 359.79/x
  3. Step 3: Cross multiply
    619.53x = 930.12 × 359.79
  4. Step 4: Simplify right side
    619.53x = 334,647.87
  5. Step 5: Solve for x
    x = 334,647.87/619.53
  6. Step 6: Final answer
    x = 540.16

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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.