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Finding the Fourth Proportional to 310.22, 425.56 and 291.59

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Solution

The fourth proportional to 310.22, 425.56 and 291.59 is: 400.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    310.22 : 425.56 = 291.59 : x
  2. Step 2: Convert to fraction form
    310.22/425.56 = 291.59/x
  3. Step 3: Cross multiply
    310.22x = 425.56 × 291.59
  4. Step 4: Simplify right side
    310.22x = 124,089.04
  5. Step 5: Solve for x
    x = 124,089.04/310.22
  6. Step 6: Final answer
    x = 400.00

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.