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Finding the Fourth Proportional to 499.48, 689.42 and 352.14

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Solution

The fourth proportional to 499.48, 689.42 and 352.14 is: 486.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.48 : 689.42 = 352.14 : x
  2. Step 2: Convert to fraction form
    499.48/689.42 = 352.14/x
  3. Step 3: Cross multiply
    499.48x = 689.42 × 352.14
  4. Step 4: Simplify right side
    499.48x = 242,772.36
  5. Step 5: Solve for x
    x = 242,772.36/499.48
  6. Step 6: Final answer
    x = 486.05

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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.