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Finding the Fourth Proportional to 350.79, 483.73 and 288.55

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Solution

The fourth proportional to 350.79, 483.73 and 288.55 is: 397.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.79 : 483.73 = 288.55 : x
  2. Step 2: Convert to fraction form
    350.79/483.73 = 288.55/x
  3. Step 3: Cross multiply
    350.79x = 483.73 × 288.55
  4. Step 4: Simplify right side
    350.79x = 139,580.29
  5. Step 5: Solve for x
    x = 139,580.29/350.79
  6. Step 6: Final answer
    x = 397.90

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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.