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Finding the Fourth Proportional to 608.66, 912.08 and 453.86

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Solution

The fourth proportional to 608.66, 912.08 and 453.86 is: 680.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.66 : 912.08 = 453.86 : x
  2. Step 2: Convert to fraction form
    608.66/912.08 = 453.86/x
  3. Step 3: Cross multiply
    608.66x = 912.08 × 453.86
  4. Step 4: Simplify right side
    608.66x = 413,956.63
  5. Step 5: Solve for x
    x = 413,956.63/608.66
  6. Step 6: Final answer
    x = 680.11

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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.