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Finding the Fourth Proportional to 479.58, 718.92 and 154.78

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Solution

The fourth proportional to 479.58, 718.92 and 154.78 is: 232.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.58 : 718.92 = 154.78 : x
  2. Step 2: Convert to fraction form
    479.58/718.92 = 154.78/x
  3. Step 3: Cross multiply
    479.58x = 718.92 × 154.78
  4. Step 4: Simplify right side
    479.58x = 111,271.23
  5. Step 5: Solve for x
    x = 111,271.23/479.58
  6. Step 6: Final answer
    x = 232.02

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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.