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Finding the Fourth Proportional to 499.71, 688.31 and 352.08

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Solution

The fourth proportional to 499.71, 688.31 and 352.08 is: 484.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.71 : 688.31 = 352.08 : x
  2. Step 2: Convert to fraction form
    499.71/688.31 = 352.08/x
  3. Step 3: Cross multiply
    499.71x = 688.31 × 352.08
  4. Step 4: Simplify right side
    499.71x = 242,340.18
  5. Step 5: Solve for x
    x = 242,340.18/499.71
  6. Step 6: Final answer
    x = 484.96

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Why These Related Problems?

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