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Finding the Fourth Proportional to 549.74, 825.03 and 405.50

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Solution

The fourth proportional to 549.74, 825.03 and 405.50 is: 608.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.74 : 825.03 = 405.50 : x
  2. Step 2: Convert to fraction form
    549.74/825.03 = 405.50/x
  3. Step 3: Cross multiply
    549.74x = 825.03 × 405.50
  4. Step 4: Simplify right side
    549.74x = 334,549.67
  5. Step 5: Solve for x
    x = 334,549.67/549.74
  6. Step 6: Final answer
    x = 608.56

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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.