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Finding the Fourth Proportional to 544.16, 749.93 and 386.79

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Solution

The fourth proportional to 544.16, 749.93 and 386.79 is: 533.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.16 : 749.93 = 386.79 : x
  2. Step 2: Convert to fraction form
    544.16/749.93 = 386.79/x
  3. Step 3: Cross multiply
    544.16x = 749.93 × 386.79
  4. Step 4: Simplify right side
    544.16x = 290,063.49
  5. Step 5: Solve for x
    x = 290,063.49/544.16
  6. Step 6: Final answer
    x = 533.05

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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.