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Finding the Fourth Proportional to 488.66, 730.19 and 479.54

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Solution

The fourth proportional to 488.66, 730.19 and 479.54 is: 716.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.66 : 730.19 = 479.54 : x
  2. Step 2: Convert to fraction form
    488.66/730.19 = 479.54/x
  3. Step 3: Cross multiply
    488.66x = 730.19 × 479.54
  4. Step 4: Simplify right side
    488.66x = 350,152.91
  5. Step 5: Solve for x
    x = 350,152.91/488.66
  6. Step 6: Final answer
    x = 716.56

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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.