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Finding the Fourth Proportional to 528.81, 795.99 and 449.55

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Solution

The fourth proportional to 528.81, 795.99 and 449.55 is: 676.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.81 : 795.99 = 449.55 : x
  2. Step 2: Convert to fraction form
    528.81/795.99 = 449.55/x
  3. Step 3: Cross multiply
    528.81x = 795.99 × 449.55
  4. Step 4: Simplify right side
    528.81x = 357,837.30
  5. Step 5: Solve for x
    x = 357,837.30/528.81
  6. Step 6: Final answer
    x = 676.68

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.