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Finding the Fourth Proportional to 549.42, 824.32 and 403.32

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Solution

The fourth proportional to 549.42, 824.32 and 403.32 is: 605.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.42 : 824.32 = 403.32 : x
  2. Step 2: Convert to fraction form
    549.42/824.32 = 403.32/x
  3. Step 3: Cross multiply
    549.42x = 824.32 × 403.32
  4. Step 4: Simplify right side
    549.42x = 332,464.74
  5. Step 5: Solve for x
    x = 332,464.74/549.42
  6. Step 6: Final answer
    x = 605.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.