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Finding the Fourth Proportional to 699.18, 965.27 and 628.26

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Solution

The fourth proportional to 699.18, 965.27 and 628.26 is: 867.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    699.18 : 965.27 = 628.26 : x
  2. Step 2: Convert to fraction form
    699.18/965.27 = 628.26/x
  3. Step 3: Cross multiply
    699.18x = 965.27 × 628.26
  4. Step 4: Simplify right side
    699.18x = 606,434.95
  5. Step 5: Solve for x
    x = 606,434.95/699.18
  6. Step 6: Final answer
    x = 867.35

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1.5x scale

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.