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Finding the Fourth Proportional to 650.88, 891.72 and 624.96

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Solution

The fourth proportional to 650.88, 891.72 and 624.96 is: 856.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.88 : 891.72 = 624.96 : x
  2. Step 2: Convert to fraction form
    650.88/891.72 = 624.96/x
  3. Step 3: Cross multiply
    650.88x = 891.72 × 624.96
  4. Step 4: Simplify right side
    650.88x = 557,289.33
  5. Step 5: Solve for x
    x = 557,289.33/650.88
  6. Step 6: Final answer
    x = 856.21

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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.