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Finding the Fourth Proportional to 837.55, 1,156.69 and 573.21

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Solution

The fourth proportional to 837.55, 1,156.69 and 573.21 is: 791.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.55 : 1,156.69 = 573.21 : x
  2. Step 2: Convert to fraction form
    837.55/1,156.69 = 573.21/x
  3. Step 3: Cross multiply
    837.55x = 1,156.69 × 573.21
  4. Step 4: Simplify right side
    837.55x = 663,026.99
  5. Step 5: Solve for x
    x = 663,026.99/837.55
  6. Step 6: Final answer
    x = 791.63

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Double scale
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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.