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Finding the Fourth Proportional to 646.95, 892.75 and 352.22

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Solution

The fourth proportional to 646.95, 892.75 and 352.22 is: 486.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    646.95 : 892.75 = 352.22 : x
  2. Step 2: Convert to fraction form
    646.95/892.75 = 352.22/x
  3. Step 3: Cross multiply
    646.95x = 892.75 × 352.22
  4. Step 4: Simplify right side
    646.95x = 314,444.41
  5. Step 5: Solve for x
    x = 314,444.41/646.95
  6. Step 6: Final answer
    x = 486.04

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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.