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Finding the Fourth Proportional to 612.54, 912.06 and 608.22

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Solution

The fourth proportional to 612.54, 912.06 and 608.22 is: 905.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.54 : 912.06 = 608.22 : x
  2. Step 2: Convert to fraction form
    612.54/912.06 = 608.22/x
  3. Step 3: Cross multiply
    612.54x = 912.06 × 608.22
  4. Step 4: Simplify right side
    612.54x = 554,733.13
  5. Step 5: Solve for x
    x = 554,733.13/612.54
  6. Step 6: Final answer
    x = 905.63

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.