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Finding the Fourth Proportional to 852.23, 1,175.77 and 557.67

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Solution

The fourth proportional to 852.23, 1,175.77 and 557.67 is: 769.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    852.23 : 1,175.77 = 557.67 : x
  2. Step 2: Convert to fraction form
    852.23/1,175.77 = 557.67/x
  3. Step 3: Cross multiply
    852.23x = 1,175.77 × 557.67
  4. Step 4: Simplify right side
    852.23x = 655,691.66
  5. Step 5: Solve for x
    x = 655,691.66/852.23
  6. Step 6: Final answer
    x = 769.38

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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.