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Finding the Fourth Proportional to 544.48, 751.39 and 320.46

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Solution

The fourth proportional to 544.48, 751.39 and 320.46 is: 442.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.48 : 751.39 = 320.46 : x
  2. Step 2: Convert to fraction form
    544.48/751.39 = 320.46/x
  3. Step 3: Cross multiply
    544.48x = 751.39 × 320.46
  4. Step 4: Simplify right side
    544.48x = 240,794.96
  5. Step 5: Solve for x
    x = 240,794.96/544.48
  6. Step 6: Final answer
    x = 442.25

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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.