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Finding the Fourth Proportional to 289.44, 433.69 and 152.28

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Solution

The fourth proportional to 289.44, 433.69 and 152.28 is: 228.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    289.44 : 433.69 = 152.28 : x
  2. Step 2: Convert to fraction form
    289.44/433.69 = 152.28/x
  3. Step 3: Cross multiply
    289.44x = 433.69 × 152.28
  4. Step 4: Simplify right side
    289.44x = 66,041.93
  5. Step 5: Solve for x
    x = 66,041.93/289.44
  6. Step 6: Final answer
    x = 228.17

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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.