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Finding the Fourth Proportional to 607.72, 912.30 and 605.32

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Solution

The fourth proportional to 607.72, 912.30 and 605.32 is: 908.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.72 : 912.30 = 605.32 : x
  2. Step 2: Convert to fraction form
    607.72/912.30 = 605.32/x
  3. Step 3: Cross multiply
    607.72x = 912.30 × 605.32
  4. Step 4: Simplify right side
    607.72x = 552,233.44
  5. Step 5: Solve for x
    x = 552,233.44/607.72
  6. Step 6: Final answer
    x = 908.70

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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.