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Finding the Fourth Proportional to 478.33, 716.12 and 354.70

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Solution

The fourth proportional to 478.33, 716.12 and 354.70 is: 531.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    478.33 : 716.12 = 354.70 : x
  2. Step 2: Convert to fraction form
    478.33/716.12 = 354.70/x
  3. Step 3: Cross multiply
    478.33x = 716.12 × 354.70
  4. Step 4: Simplify right side
    478.33x = 254,007.76
  5. Step 5: Solve for x
    x = 254,007.76/478.33
  6. Step 6: Final answer
    x = 531.03

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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.