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Finding the Fourth Proportional to 605.55, 903.97 and 578.95

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Solution

The fourth proportional to 605.55, 903.97 and 578.95 is: 864.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.55 : 903.97 = 578.95 : x
  2. Step 2: Convert to fraction form
    605.55/903.97 = 578.95/x
  3. Step 3: Cross multiply
    605.55x = 903.97 × 578.95
  4. Step 4: Simplify right side
    605.55x = 523,353.43
  5. Step 5: Solve for x
    x = 523,353.43/605.55
  6. Step 6: Final answer
    x = 864.26

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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.