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Finding the Fourth Proportional to 544.07, 750.83 and 311.20

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Solution

The fourth proportional to 544.07, 750.83 and 311.20 is: 429.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.07 : 750.83 = 311.20 : x
  2. Step 2: Convert to fraction form
    544.07/750.83 = 311.20/x
  3. Step 3: Cross multiply
    544.07x = 750.83 × 311.20
  4. Step 4: Simplify right side
    544.07x = 233,658.30
  5. Step 5: Solve for x
    x = 233,658.30/544.07
  6. Step 6: Final answer
    x = 429.46

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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.