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Finding the Fourth Proportional to 548.99, 757.60 and 316.12

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Solution

The fourth proportional to 548.99, 757.60 and 316.12 is: 436.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.99 : 757.60 = 316.12 : x
  2. Step 2: Convert to fraction form
    548.99/757.60 = 316.12/x
  3. Step 3: Cross multiply
    548.99x = 757.60 × 316.12
  4. Step 4: Simplify right side
    548.99x = 239,492.51
  5. Step 5: Solve for x
    x = 239,492.51/548.99
  6. Step 6: Final answer
    x = 436.24

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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.