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Finding the Fourth Proportional to 544.02, 750.54 and 386.64

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Solution

The fourth proportional to 544.02, 750.54 and 386.64 is: 533.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.02 : 750.54 = 386.64 : x
  2. Step 2: Convert to fraction form
    544.02/750.54 = 386.64/x
  3. Step 3: Cross multiply
    544.02x = 750.54 × 386.64
  4. Step 4: Simplify right side
    544.02x = 290,188.79
  5. Step 5: Solve for x
    x = 290,188.79/544.02
  6. Step 6: Final answer
    x = 533.42

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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.