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Finding the Fourth Proportional to 480.34, 663.02 and 415.54

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Solution

The fourth proportional to 480.34, 663.02 and 415.54 is: 573.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.34 : 663.02 = 415.54 : x
  2. Step 2: Convert to fraction form
    480.34/663.02 = 415.54/x
  3. Step 3: Cross multiply
    480.34x = 663.02 × 415.54
  4. Step 4: Simplify right side
    480.34x = 275,509.25
  5. Step 5: Solve for x
    x = 275,509.25/480.34
  6. Step 6: Final answer
    x = 573.57

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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.