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Finding the Fourth Proportional to 441.60, 608.76 and 331.08

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Solution

The fourth proportional to 441.60, 608.76 and 331.08 is: 456.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.60 : 608.76 = 331.08 : x
  2. Step 2: Convert to fraction form
    441.60/608.76 = 331.08/x
  3. Step 3: Cross multiply
    441.60x = 608.76 × 331.08
  4. Step 4: Simplify right side
    441.60x = 201,548.26
  5. Step 5: Solve for x
    x = 201,548.26/441.60
  6. Step 6: Final answer
    x = 456.40

Related Problems

Find fourth proportional to 220.80, 304.38 and 165.54
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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.