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Finding the Fourth Proportional to 283.32, 390.94 and 165.32

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Solution

The fourth proportional to 283.32, 390.94 and 165.32 is: 228.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.32 : 390.94 = 165.32 : x
  2. Step 2: Convert to fraction form
    283.32/390.94 = 165.32/x
  3. Step 3: Cross multiply
    283.32x = 390.94 × 165.32
  4. Step 4: Simplify right side
    283.32x = 64,627.42
  5. Step 5: Solve for x
    x = 64,627.42/283.32
  6. Step 6: Final answer
    x = 228.11

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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.