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Finding the Fourth Proportional to 855.50, 1,282.64 and 444.22

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Solution

The fourth proportional to 855.50, 1,282.64 and 444.22 is: 666.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    855.50 : 1,282.64 = 444.22 : x
  2. Step 2: Convert to fraction form
    855.50/1,282.64 = 444.22/x
  3. Step 3: Cross multiply
    855.50x = 1,282.64 × 444.22
  4. Step 4: Simplify right side
    855.50x = 569,768.91
  5. Step 5: Solve for x
    x = 569,768.91/855.50
  6. Step 6: Final answer
    x = 666.01

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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.