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Finding the Fourth Proportional to 700.23, 966.04 and 405.39

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Solution

The fourth proportional to 700.23, 966.04 and 405.39 is: 559.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.23 : 966.04 = 405.39 : x
  2. Step 2: Convert to fraction form
    700.23/966.04 = 405.39/x
  3. Step 3: Cross multiply
    700.23x = 966.04 × 405.39
  4. Step 4: Simplify right side
    700.23x = 391,622.96
  5. Step 5: Solve for x
    x = 391,622.96/700.23
  6. Step 6: Final answer
    x = 559.28

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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.