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Finding the Fourth Proportional to 479.18, 661.29 and 375.50

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Solution

The fourth proportional to 479.18, 661.29 and 375.50 is: 518.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.18 : 661.29 = 375.50 : x
  2. Step 2: Convert to fraction form
    479.18/661.29 = 375.50/x
  3. Step 3: Cross multiply
    479.18x = 661.29 × 375.50
  4. Step 4: Simplify right side
    479.18x = 248,314.40
  5. Step 5: Solve for x
    x = 248,314.40/479.18
  6. Step 6: Final answer
    x = 518.21

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.