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Finding the Fourth Proportional to 608.11, 915.26 and 454.86

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Solution

The fourth proportional to 608.11, 915.26 and 454.86 is: 684.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.11 : 915.26 = 454.86 : x
  2. Step 2: Convert to fraction form
    608.11/915.26 = 454.86/x
  3. Step 3: Cross multiply
    608.11x = 915.26 × 454.86
  4. Step 4: Simplify right side
    608.11x = 416,312.89
  5. Step 5: Solve for x
    x = 416,312.89/608.11
  6. Step 6: Final answer
    x = 684.60

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.