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Finding the Fourth Proportional to 770.07, 1,154.99 and 222.19

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Solution

The fourth proportional to 770.07, 1,154.99 and 222.19 is: 333.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    770.07 : 1,154.99 = 222.19 : x
  2. Step 2: Convert to fraction form
    770.07/1,154.99 = 222.19/x
  3. Step 3: Cross multiply
    770.07x = 1,154.99 × 222.19
  4. Step 4: Simplify right side
    770.07x = 256,624.90
  5. Step 5: Solve for x
    x = 256,624.90/770.07
  6. Step 6: Final answer
    x = 333.25

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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.