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Finding the Fourth Proportional to 654.65, 903.39 and 374.91

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Solution

The fourth proportional to 654.65, 903.39 and 374.91 is: 517.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.65 : 903.39 = 374.91 : x
  2. Step 2: Convert to fraction form
    654.65/903.39 = 374.91/x
  3. Step 3: Cross multiply
    654.65x = 903.39 × 374.91
  4. Step 4: Simplify right side
    654.65x = 338,690.88
  5. Step 5: Solve for x
    x = 338,690.88/654.65
  6. Step 6: Final answer
    x = 517.36

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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.