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Finding the Fourth Proportional to 289.26, 433.81 and 152.24

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Solution

The fourth proportional to 289.26, 433.81 and 152.24 is: 228.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    289.26 : 433.81 = 152.24 : x
  2. Step 2: Convert to fraction form
    289.26/433.81 = 152.24/x
  3. Step 3: Cross multiply
    289.26x = 433.81 × 152.24
  4. Step 4: Simplify right side
    289.26x = 66,041.67
  5. Step 5: Solve for x
    x = 66,041.67/289.26
  6. Step 6: Final answer
    x = 228.31

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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.