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Finding the Fourth Proportional to 470.60, 706.10 and 254.13

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Solution

The fourth proportional to 470.60, 706.10 and 254.13 is: 381.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.60 : 706.10 = 254.13 : x
  2. Step 2: Convert to fraction form
    470.60/706.10 = 254.13/x
  3. Step 3: Cross multiply
    470.60x = 706.10 × 254.13
  4. Step 4: Simplify right side
    470.60x = 179,441.19
  5. Step 5: Solve for x
    x = 179,441.19/470.60
  6. Step 6: Final answer
    x = 381.30

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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.