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Finding the Fourth Proportional to 433.64, 650.28 and 260.48

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Solution

The fourth proportional to 433.64, 650.28 and 260.48 is: 390.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.64 : 650.28 = 260.48 : x
  2. Step 2: Convert to fraction form
    433.64/650.28 = 260.48/x
  3. Step 3: Cross multiply
    433.64x = 650.28 × 260.48
  4. Step 4: Simplify right side
    433.64x = 169,384.93
  5. Step 5: Solve for x
    x = 169,384.93/433.64
  6. Step 6: Final answer
    x = 390.61

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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.