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Finding the Fourth Proportional to 700.29, 965.99 and 513.45

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Solution

The fourth proportional to 700.29, 965.99 and 513.45 is: 708.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.29 : 965.99 = 513.45 : x
  2. Step 2: Convert to fraction form
    700.29/965.99 = 513.45/x
  3. Step 3: Cross multiply
    700.29x = 965.99 × 513.45
  4. Step 4: Simplify right side
    700.29x = 495,988.85
  5. Step 5: Solve for x
    x = 495,988.85/700.29
  6. Step 6: Final answer
    x = 708.26

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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.