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Finding the Fourth Proportional to 626, 937.40 and 609.36

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Solution

The fourth proportional to 626, 937.40 and 609.36 is: 912.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    626 : 937.40 = 609.36 : x
  2. Step 2: Convert to fraction form
    626/937.40 = 609.36/x
  3. Step 3: Cross multiply
    626x = 937.40 × 609.36
  4. Step 4: Simplify right side
    626x = 571,214.06
  5. Step 5: Solve for x
    x = 571,214.06/626
  6. Step 6: Final answer
    x = 912.48

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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.