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Finding the Fourth Proportional to 646.76, 892.51 and 352.03

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Solution

The fourth proportional to 646.76, 892.51 and 352.03 is: 485.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    646.76 : 892.51 = 352.03 : x
  2. Step 2: Convert to fraction form
    646.76/892.51 = 352.03/x
  3. Step 3: Cross multiply
    646.76x = 892.51 × 352.03
  4. Step 4: Simplify right side
    646.76x = 314,190.30
  5. Step 5: Solve for x
    x = 314,190.30/646.76
  6. Step 6: Final answer
    x = 485.79

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Find fourth proportional to 323.38, 446.26 and 176.02
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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.