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Finding the Fourth Proportional to 478.46, 715.80 and 363.23

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Solution

The fourth proportional to 478.46, 715.80 and 363.23 is: 543.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    478.46 : 715.80 = 363.23 : x
  2. Step 2: Convert to fraction form
    478.46/715.80 = 363.23/x
  3. Step 3: Cross multiply
    478.46x = 715.80 × 363.23
  4. Step 4: Simplify right side
    478.46x = 260,000.03
  5. Step 5: Solve for x
    x = 260,000.03/478.46
  6. Step 6: Final answer
    x = 543.41

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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.