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Finding the Fourth Proportional to 471.61, 707.21 and 254.93

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Solution

The fourth proportional to 471.61, 707.21 and 254.93 is: 382.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    471.61 : 707.21 = 254.93 : x
  2. Step 2: Convert to fraction form
    471.61/707.21 = 254.93/x
  3. Step 3: Cross multiply
    471.61x = 707.21 × 254.93
  4. Step 4: Simplify right side
    471.61x = 180,287.77
  5. Step 5: Solve for x
    x = 180,287.77/471.61
  6. Step 6: Final answer
    x = 382.29

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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.