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Finding the Fourth Proportional to 479.54, 719.31 and 154.90

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Solution

The fourth proportional to 479.54, 719.31 and 154.90 is: 232.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.54 : 719.31 = 154.90 : x
  2. Step 2: Convert to fraction form
    479.54/719.31 = 154.90/x
  3. Step 3: Cross multiply
    479.54x = 719.31 × 154.90
  4. Step 4: Simplify right side
    479.54x = 111,421.12
  5. Step 5: Solve for x
    x = 111,421.12/479.54
  6. Step 6: Final answer
    x = 232.35

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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.