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Finding the Fourth Proportional to 703.65, 969.15 and 610.40

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Solution

The fourth proportional to 703.65, 969.15 and 610.40 is: 840.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.65 : 969.15 = 610.40 : x
  2. Step 2: Convert to fraction form
    703.65/969.15 = 610.40/x
  3. Step 3: Cross multiply
    703.65x = 969.15 × 610.40
  4. Step 4: Simplify right side
    703.65x = 591,564.31
  5. Step 5: Solve for x
    x = 591,564.31/703.65
  6. Step 6: Final answer
    x = 840.71

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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.