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Finding the Fourth Proportional to 558.03, 835.02 and 455.07

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Solution

The fourth proportional to 558.03, 835.02 and 455.07 is: 680.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.03 : 835.02 = 455.07 : x
  2. Step 2: Convert to fraction form
    558.03/835.02 = 455.07/x
  3. Step 3: Cross multiply
    558.03x = 835.02 × 455.07
  4. Step 4: Simplify right side
    558.03x = 379,992.55
  5. Step 5: Solve for x
    x = 379,992.55/558.03
  6. Step 6: Final answer
    x = 680.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.