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Finding the Fourth Proportional to 347.44, 521.72 and 286.44

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Solution

The fourth proportional to 347.44, 521.72 and 286.44 is: 430.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.44 : 521.72 = 286.44 : x
  2. Step 2: Convert to fraction form
    347.44/521.72 = 286.44/x
  3. Step 3: Cross multiply
    347.44x = 521.72 × 286.44
  4. Step 4: Simplify right side
    347.44x = 149,441.48
  5. Step 5: Solve for x
    x = 149,441.48/347.44
  6. Step 6: Final answer
    x = 430.12

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.