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Finding the Fourth Proportional to 480.47, 662.60 and 314.83

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Solution

The fourth proportional to 480.47, 662.60 and 314.83 is: 434.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.47 : 662.60 = 314.83 : x
  2. Step 2: Convert to fraction form
    480.47/662.60 = 314.83/x
  3. Step 3: Cross multiply
    480.47x = 662.60 × 314.83
  4. Step 4: Simplify right side
    480.47x = 208,601.47
  5. Step 5: Solve for x
    x = 208,601.47/480.47
  6. Step 6: Final answer
    x = 434.16

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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.