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Finding the Fourth Proportional to 290.59, 400.84 and 191.02

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Solution

The fourth proportional to 290.59, 400.84 and 191.02 is: 263.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    290.59 : 400.84 = 191.02 : x
  2. Step 2: Convert to fraction form
    290.59/400.84 = 191.02/x
  3. Step 3: Cross multiply
    290.59x = 400.84 × 191.02
  4. Step 4: Simplify right side
    290.59x = 76,565.50
  5. Step 5: Solve for x
    x = 76,565.50/290.59
  6. Step 6: Final answer
    x = 263.48

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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.