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Finding the Fourth Proportional to 617.53, 852.88 and 479.32

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Solution

The fourth proportional to 617.53, 852.88 and 479.32 is: 662.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.53 : 852.88 = 479.32 : x
  2. Step 2: Convert to fraction form
    617.53/852.88 = 479.32/x
  3. Step 3: Cross multiply
    617.53x = 852.88 × 479.32
  4. Step 4: Simplify right side
    617.53x = 408,802.44
  5. Step 5: Solve for x
    x = 408,802.44/617.53
  6. Step 6: Final answer
    x = 662.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.