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Finding the Fourth Proportional to 502.15, 754.08 and 480.55

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Solution

The fourth proportional to 502.15, 754.08 and 480.55 is: 721.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.15 : 754.08 = 480.55 : x
  2. Step 2: Convert to fraction form
    502.15/754.08 = 480.55/x
  3. Step 3: Cross multiply
    502.15x = 754.08 × 480.55
  4. Step 4: Simplify right side
    502.15x = 362,373.14
  5. Step 5: Solve for x
    x = 362,373.14/502.15
  6. Step 6: Final answer
    x = 721.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.