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Finding the Fourth Proportional to 646.88, 969.80 and 334.53

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Solution

The fourth proportional to 646.88, 969.80 and 334.53 is: 501.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    646.88 : 969.80 = 334.53 : x
  2. Step 2: Convert to fraction form
    646.88/969.80 = 334.53/x
  3. Step 3: Cross multiply
    646.88x = 969.80 × 334.53
  4. Step 4: Simplify right side
    646.88x = 324,425.52
  5. Step 5: Solve for x
    x = 324,425.52/646.88
  6. Step 6: Final answer
    x = 501.53

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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.