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Finding the Fourth Proportional to 515.10, 771.03 and 368.37

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Solution

The fourth proportional to 515.10, 771.03 and 368.37 is: 551.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    515.10 : 771.03 = 368.37 : x
  2. Step 2: Convert to fraction form
    515.10/771.03 = 368.37/x
  3. Step 3: Cross multiply
    515.10x = 771.03 × 368.37
  4. Step 4: Simplify right side
    515.10x = 284,024.32
  5. Step 5: Solve for x
    x = 284,024.32/515.10
  6. Step 6: Final answer
    x = 551.40

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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.