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Finding the Fourth Proportional to 283.32, 390.48 and 230.75

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Solution

The fourth proportional to 283.32, 390.48 and 230.75 is: 318.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.32 : 390.48 = 230.75 : x
  2. Step 2: Convert to fraction form
    283.32/390.48 = 230.75/x
  3. Step 3: Cross multiply
    283.32x = 390.48 × 230.75
  4. Step 4: Simplify right side
    283.32x = 90,103.26
  5. Step 5: Solve for x
    x = 90,103.26/283.32
  6. Step 6: Final answer
    x = 318.03

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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.