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Finding the Fourth Proportional to 803.27, 1,108.32 and 471.57

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Solution

The fourth proportional to 803.27, 1,108.32 and 471.57 is: 650.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    803.27 : 1,108.32 = 471.57 : x
  2. Step 2: Convert to fraction form
    803.27/1,108.32 = 471.57/x
  3. Step 3: Cross multiply
    803.27x = 1,108.32 × 471.57
  4. Step 4: Simplify right side
    803.27x = 522,650.46
  5. Step 5: Solve for x
    x = 522,650.46/803.27
  6. Step 6: Final answer
    x = 650.66

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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.