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Finding the Fourth Proportional to 837.35, 1,154.79 and 571.67

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Solution

The fourth proportional to 837.35, 1,154.79 and 571.67 is: 788.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.35 : 1,154.79 = 571.67 : x
  2. Step 2: Convert to fraction form
    837.35/1,154.79 = 571.67/x
  3. Step 3: Cross multiply
    837.35x = 1,154.79 × 571.67
  4. Step 4: Simplify right side
    837.35x = 660,153.03
  5. Step 5: Solve for x
    x = 660,153.03/837.35
  6. Step 6: Final answer
    x = 788.39

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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.