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Finding the Fourth Proportional to 479.97, 719.91 and 155.34

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Solution

The fourth proportional to 479.97, 719.91 and 155.34 is: 233.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.97 : 719.91 = 155.34 : x
  2. Step 2: Convert to fraction form
    479.97/719.91 = 155.34/x
  3. Step 3: Cross multiply
    479.97x = 719.91 × 155.34
  4. Step 4: Simplify right side
    479.97x = 111,830.82
  5. Step 5: Solve for x
    x = 111,830.82/479.97
  6. Step 6: Final answer
    x = 233.00

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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.