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Finding the Fourth Proportional to 499.13, 688.58 and 322.05

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Solution

The fourth proportional to 499.13, 688.58 and 322.05 is: 444.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.13 : 688.58 = 322.05 : x
  2. Step 2: Convert to fraction form
    499.13/688.58 = 322.05/x
  3. Step 3: Cross multiply
    499.13x = 688.58 × 322.05
  4. Step 4: Simplify right side
    499.13x = 221,757.19
  5. Step 5: Solve for x
    x = 221,757.19/499.13
  6. Step 6: Final answer
    x = 444.29

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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.