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Finding the Fourth Proportional to 635.18, 876.62 and 623.03

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Solution

The fourth proportional to 635.18, 876.62 and 623.03 is: 859.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.18 : 876.62 = 623.03 : x
  2. Step 2: Convert to fraction form
    635.18/876.62 = 623.03/x
  3. Step 3: Cross multiply
    635.18x = 876.62 × 623.03
  4. Step 4: Simplify right side
    635.18x = 546,157.73
  5. Step 5: Solve for x
    x = 546,157.73/635.18
  6. Step 6: Final answer
    x = 859.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.