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Finding the Fourth Proportional to 624.84, 854.88 and 622.44

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Solution

The fourth proportional to 624.84, 854.88 and 622.44 is: 851.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.84 : 854.88 = 622.44 : x
  2. Step 2: Convert to fraction form
    624.84/854.88 = 622.44/x
  3. Step 3: Cross multiply
    624.84x = 854.88 × 622.44
  4. Step 4: Simplify right side
    624.84x = 532,111.51
  5. Step 5: Solve for x
    x = 532,111.51/624.84
  6. Step 6: Final answer
    x = 851.60

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.