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Finding the Fourth Proportional to 514.18, 771.12 and 201.77

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Solution

The fourth proportional to 514.18, 771.12 and 201.77 is: 302.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.18 : 771.12 = 201.77 : x
  2. Step 2: Convert to fraction form
    514.18/771.12 = 201.77/x
  3. Step 3: Cross multiply
    514.18x = 771.12 × 201.77
  4. Step 4: Simplify right side
    514.18x = 155,590.81
  5. Step 5: Solve for x
    x = 155,590.81/514.18
  6. Step 6: Final answer
    x = 302.60

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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.