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Finding the Fourth Proportional to 558.98, 771.08 and 454.18

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Solution

The fourth proportional to 558.98, 771.08 and 454.18 is: 626.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.98 : 771.08 = 454.18 : x
  2. Step 2: Convert to fraction form
    558.98/771.08 = 454.18/x
  3. Step 3: Cross multiply
    558.98x = 771.08 × 454.18
  4. Step 4: Simplify right side
    558.98x = 350,209.11
  5. Step 5: Solve for x
    x = 350,209.11/558.98
  6. Step 6: Final answer
    x = 626.51

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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.