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Finding the Fourth Proportional to 651.20, 899.88 and 493.54

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Solution

The fourth proportional to 651.20, 899.88 and 493.54 is: 682.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.20 : 899.88 = 493.54 : x
  2. Step 2: Convert to fraction form
    651.20/899.88 = 493.54/x
  3. Step 3: Cross multiply
    651.20x = 899.88 × 493.54
  4. Step 4: Simplify right side
    651.20x = 444,131.08
  5. Step 5: Solve for x
    x = 444,131.08/651.20
  6. Step 6: Final answer
    x = 682.02

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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.