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Finding the Fourth Proportional to 700.41, 966.57 and 389.91

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Solution

The fourth proportional to 700.41, 966.57 and 389.91 is: 538.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.41 : 966.57 = 389.91 : x
  2. Step 2: Convert to fraction form
    700.41/966.57 = 389.91/x
  3. Step 3: Cross multiply
    700.41x = 966.57 × 389.91
  4. Step 4: Simplify right side
    700.41x = 376,875.31
  5. Step 5: Solve for x
    x = 376,875.31/700.41
  6. Step 6: Final answer
    x = 538.08

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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.