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Finding the Fourth Proportional to 700.18, 966.24 and 389.68

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Solution

The fourth proportional to 700.18, 966.24 and 389.68 is: 537.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.18 : 966.24 = 389.68 : x
  2. Step 2: Convert to fraction form
    700.18/966.24 = 389.68/x
  3. Step 3: Cross multiply
    700.18x = 966.24 × 389.68
  4. Step 4: Simplify right side
    700.18x = 376,524.40
  5. Step 5: Solve for x
    x = 376,524.40/700.18
  6. Step 6: Final answer
    x = 537.75

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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.