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Finding the Fourth Proportional to 852.12, 1,176.31 and 818.98

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Solution

The fourth proportional to 852.12, 1,176.31 and 818.98 is: 1,130.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    852.12 : 1,176.31 = 818.98 : x
  2. Step 2: Convert to fraction form
    852.12/1,176.31 = 818.98/x
  3. Step 3: Cross multiply
    852.12x = 1,176.31 × 818.98
  4. Step 4: Simplify right side
    852.12x = 963,368.48
  5. Step 5: Solve for x
    x = 963,368.48/852.12
  6. Step 6: Final answer
    x = 1,130.56

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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.