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Finding the Fourth Proportional to 514.17, 770.85 and 240.39

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Solution

The fourth proportional to 514.17, 770.85 and 240.39 is: 360.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.17 : 770.85 = 240.39 : x
  2. Step 2: Convert to fraction form
    514.17/770.85 = 240.39/x
  3. Step 3: Cross multiply
    514.17x = 770.85 × 240.39
  4. Step 4: Simplify right side
    514.17x = 185,304.63
  5. Step 5: Solve for x
    x = 185,304.63/514.17
  6. Step 6: Final answer
    x = 360.40

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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.