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Finding the Fourth Proportional to 433.71, 648.99 and 260.46

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Solution

The fourth proportional to 433.71, 648.99 and 260.46 is: 389.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.71 : 648.99 = 260.46 : x
  2. Step 2: Convert to fraction form
    433.71/648.99 = 260.46/x
  3. Step 3: Cross multiply
    433.71x = 648.99 × 260.46
  4. Step 4: Simplify right side
    433.71x = 169,035.94
  5. Step 5: Solve for x
    x = 169,035.94/433.71
  6. Step 6: Final answer
    x = 389.74

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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.