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Finding the Fourth Proportional to 548.70, 752.93 and 499.38

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Solution

The fourth proportional to 548.70, 752.93 and 499.38 is: 685.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.70 : 752.93 = 499.38 : x
  2. Step 2: Convert to fraction form
    548.70/752.93 = 499.38/x
  3. Step 3: Cross multiply
    548.70x = 752.93 × 499.38
  4. Step 4: Simplify right side
    548.70x = 375,995.69
  5. Step 5: Solve for x
    x = 375,995.69/548.70
  6. Step 6: Final answer
    x = 685.25

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.