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Finding the Fourth Proportional to 936.39, 1,401.12 and 566.40

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Solution

The fourth proportional to 936.39, 1,401.12 and 566.40 is: 847.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    936.39 : 1,401.12 = 566.40 : x
  2. Step 2: Convert to fraction form
    936.39/1,401.12 = 566.40/x
  3. Step 3: Cross multiply
    936.39x = 1,401.12 × 566.40
  4. Step 4: Simplify right side
    936.39x = 793,594.37
  5. Step 5: Solve for x
    x = 793,594.37/936.39
  6. Step 6: Final answer
    x = 847.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.