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Finding the Fourth Proportional to 480.82, 715.46 and 479.20

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Solution

The fourth proportional to 480.82, 715.46 and 479.20 is: 713.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.82 : 715.46 = 479.20 : x
  2. Step 2: Convert to fraction form
    480.82/715.46 = 479.20/x
  3. Step 3: Cross multiply
    480.82x = 715.46 × 479.20
  4. Step 4: Simplify right side
    480.82x = 342,848.43
  5. Step 5: Solve for x
    x = 342,848.43/480.82
  6. Step 6: Final answer
    x = 713.05

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.