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Finding the Fourth Proportional to 666.27, 993.65 and 569.39

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Solution

The fourth proportional to 666.27, 993.65 and 569.39 is: 849.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    666.27 : 993.65 = 569.39 : x
  2. Step 2: Convert to fraction form
    666.27/993.65 = 569.39/x
  3. Step 3: Cross multiply
    666.27x = 993.65 × 569.39
  4. Step 4: Simplify right side
    666.27x = 565,766.56
  5. Step 5: Solve for x
    x = 565,766.56/666.27
  6. Step 6: Final answer
    x = 849.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.