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Finding the Fourth Proportional to 562.54, 843.90 and 319.18

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Solution

The fourth proportional to 562.54, 843.90 and 319.18 is: 478.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    562.54 : 843.90 = 319.18 : x
  2. Step 2: Convert to fraction form
    562.54/843.90 = 319.18/x
  3. Step 3: Cross multiply
    562.54x = 843.90 × 319.18
  4. Step 4: Simplify right side
    562.54x = 269,356.00
  5. Step 5: Solve for x
    x = 269,356.00/562.54
  6. Step 6: Final answer
    x = 478.82

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.