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Finding the Fourth Proportional to 483.54, 724.53 and 290.70

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Solution

The fourth proportional to 483.54, 724.53 and 290.70 is: 435.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.54 : 724.53 = 290.70 : x
  2. Step 2: Convert to fraction form
    483.54/724.53 = 290.70/x
  3. Step 3: Cross multiply
    483.54x = 724.53 × 290.70
  4. Step 4: Simplify right side
    483.54x = 210,620.87
  5. Step 5: Solve for x
    x = 210,620.87/483.54
  6. Step 6: Final answer
    x = 435.58

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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.