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Finding the Fourth Proportional to 479.75, 719.49 and 155.08

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Solution

The fourth proportional to 479.75, 719.49 and 155.08 is: 232.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.75 : 719.49 = 155.08 : x
  2. Step 2: Convert to fraction form
    479.75/719.49 = 155.08/x
  3. Step 3: Cross multiply
    479.75x = 719.49 × 155.08
  4. Step 4: Simplify right side
    479.75x = 111,574.91
  5. Step 5: Solve for x
    x = 111,574.91/479.75
  6. Step 6: Final answer
    x = 232.57

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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.