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Finding the Fourth Proportional to 479.95, 719.77 and 187.43

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Solution

The fourth proportional to 479.95, 719.77 and 187.43 is: 281.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.95 : 719.77 = 187.43 : x
  2. Step 2: Convert to fraction form
    479.95/719.77 = 187.43/x
  3. Step 3: Cross multiply
    479.95x = 719.77 × 187.43
  4. Step 4: Simplify right side
    479.95x = 134,906.49
  5. Step 5: Solve for x
    x = 134,906.49/479.95
  6. Step 6: Final answer
    x = 281.08

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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.