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Finding the Fourth Proportional to 549.74, 758.34 and 374.78

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Solution

The fourth proportional to 549.74, 758.34 and 374.78 is: 516.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.74 : 758.34 = 374.78 : x
  2. Step 2: Convert to fraction form
    549.74/758.34 = 374.78/x
  3. Step 3: Cross multiply
    549.74x = 758.34 × 374.78
  4. Step 4: Simplify right side
    549.74x = 284,210.67
  5. Step 5: Solve for x
    x = 284,210.67/549.74
  6. Step 6: Final answer
    x = 516.99

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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.