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Finding the Fourth Proportional to 700.88, 967.26 and 390.36

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Solution

The fourth proportional to 700.88, 967.26 and 390.36 is: 538.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.88 : 967.26 = 390.36 : x
  2. Step 2: Convert to fraction form
    700.88/967.26 = 390.36/x
  3. Step 3: Cross multiply
    700.88x = 967.26 × 390.36
  4. Step 4: Simplify right side
    700.88x = 377,579.61
  5. Step 5: Solve for x
    x = 377,579.61/700.88
  6. Step 6: Final answer
    x = 538.72

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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.