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Finding the Fourth Proportional to 619.88, 929.80 and 181.14

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Solution

The fourth proportional to 619.88, 929.80 and 181.14 is: 271.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.88 : 929.80 = 181.14 : x
  2. Step 2: Convert to fraction form
    619.88/929.80 = 181.14/x
  3. Step 3: Cross multiply
    619.88x = 929.80 × 181.14
  4. Step 4: Simplify right side
    619.88x = 168,423.97
  5. Step 5: Solve for x
    x = 168,423.97/619.88
  6. Step 6: Final answer
    x = 271.70

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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.