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Finding the Fourth Proportional to 622.08, 926.64 and 607.91

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Solution

The fourth proportional to 622.08, 926.64 and 607.91 is: 905.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.08 : 926.64 = 607.91 : x
  2. Step 2: Convert to fraction form
    622.08/926.64 = 607.91/x
  3. Step 3: Cross multiply
    622.08x = 926.64 × 607.91
  4. Step 4: Simplify right side
    622.08x = 563,309.09
  5. Step 5: Solve for x
    x = 563,309.09/622.08
  6. Step 6: Final answer
    x = 905.53

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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.