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Finding the Fourth Proportional to 549.53, 758.43 and 313.58

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Solution

The fourth proportional to 549.53, 758.43 and 313.58 is: 432.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.53 : 758.43 = 313.58 : x
  2. Step 2: Convert to fraction form
    549.53/758.43 = 313.58/x
  3. Step 3: Cross multiply
    549.53x = 758.43 × 313.58
  4. Step 4: Simplify right side
    549.53x = 237,824.69
  5. Step 5: Solve for x
    x = 237,824.69/549.53
  6. Step 6: Final answer
    x = 432.78

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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.