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Finding the Fourth Proportional to 471.40, 707.43 and 349.29

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Solution

The fourth proportional to 471.40, 707.43 and 349.29 is: 524.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    471.40 : 707.43 = 349.29 : x
  2. Step 2: Convert to fraction form
    471.40/707.43 = 349.29/x
  3. Step 3: Cross multiply
    471.40x = 707.43 × 349.29
  4. Step 4: Simplify right side
    471.40x = 247,098.22
  5. Step 5: Solve for x
    x = 247,098.22/471.40
  6. Step 6: Final answer
    x = 524.18

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Why These Related Problems?

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