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Finding the Fourth Proportional to 598.55, 823.10 and 479.02

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Solution

The fourth proportional to 598.55, 823.10 and 479.02 is: 658.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    598.55 : 823.10 = 479.02 : x
  2. Step 2: Convert to fraction form
    598.55/823.10 = 479.02/x
  3. Step 3: Cross multiply
    598.55x = 823.10 × 479.02
  4. Step 4: Simplify right side
    598.55x = 394,282.49
  5. Step 5: Solve for x
    x = 394,282.49/598.55
  6. Step 6: Final answer
    x = 658.73

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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.