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Finding the Fourth Proportional to 481.79, 718.90 and 452.40

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Solution

The fourth proportional to 481.79, 718.90 and 452.40 is: 675.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.79 : 718.90 = 452.40 : x
  2. Step 2: Convert to fraction form
    481.79/718.90 = 452.40/x
  3. Step 3: Cross multiply
    481.79x = 718.90 × 452.40
  4. Step 4: Simplify right side
    481.79x = 325,230.36
  5. Step 5: Solve for x
    x = 325,230.36/481.79
  6. Step 6: Final answer
    x = 675.05

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.