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Finding the Fourth Proportional to 480.23, 663.35 and 387.33

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Solution

The fourth proportional to 480.23, 663.35 and 387.33 is: 535.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.23 : 663.35 = 387.33 : x
  2. Step 2: Convert to fraction form
    480.23/663.35 = 387.33/x
  3. Step 3: Cross multiply
    480.23x = 663.35 × 387.33
  4. Step 4: Simplify right side
    480.23x = 256,935.36
  5. Step 5: Solve for x
    x = 256,935.36/480.23
  6. Step 6: Final answer
    x = 535.03

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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.