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Finding the Fourth Proportional to 818.15, 1,125.17 and 652.08

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Solution

The fourth proportional to 818.15, 1,125.17 and 652.08 is: 896.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    818.15 : 1,125.17 = 652.08 : x
  2. Step 2: Convert to fraction form
    818.15/1,125.17 = 652.08/x
  3. Step 3: Cross multiply
    818.15x = 1,125.17 × 652.08
  4. Step 4: Simplify right side
    818.15x = 733,692.93
  5. Step 5: Solve for x
    x = 733,692.93/818.15
  6. Step 6: Final answer
    x = 896.77

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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.