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Finding the Fourth Proportional to 480.55, 717.59 and 394.06

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Solution

The fourth proportional to 480.55, 717.59 and 394.06 is: 588.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.55 : 717.59 = 394.06 : x
  2. Step 2: Convert to fraction form
    480.55/717.59 = 394.06/x
  3. Step 3: Cross multiply
    480.55x = 717.59 × 394.06
  4. Step 4: Simplify right side
    480.55x = 282,773.52
  5. Step 5: Solve for x
    x = 282,773.52/480.55
  6. Step 6: Final answer
    x = 588.44

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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.