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Finding the Fourth Proportional to 837.90, 1,156.23 and 459.72

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Solution

The fourth proportional to 837.90, 1,156.23 and 459.72 is: 634.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.90 : 1,156.23 = 459.72 : x
  2. Step 2: Convert to fraction form
    837.90/1,156.23 = 459.72/x
  3. Step 3: Cross multiply
    837.90x = 1,156.23 × 459.72
  4. Step 4: Simplify right side
    837.90x = 531,542.06
  5. Step 5: Solve for x
    x = 531,542.06/837.90
  6. Step 6: Final answer
    x = 634.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.