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Finding the Fourth Proportional to 662.42, 913.94 and 514.80

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Solution

The fourth proportional to 662.42, 913.94 and 514.80 is: 710.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.42 : 913.94 = 514.80 : x
  2. Step 2: Convert to fraction form
    662.42/913.94 = 514.80/x
  3. Step 3: Cross multiply
    662.42x = 913.94 × 514.80
  4. Step 4: Simplify right side
    662.42x = 470,496.31
  5. Step 5: Solve for x
    x = 470,496.31/662.42
  6. Step 6: Final answer
    x = 710.27

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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.