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Finding the Fourth Proportional to 581.62, 802.62 and 319.60

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Solution

The fourth proportional to 581.62, 802.62 and 319.60 is: 441.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.62 : 802.62 = 319.60 : x
  2. Step 2: Convert to fraction form
    581.62/802.62 = 319.60/x
  3. Step 3: Cross multiply
    581.62x = 802.62 × 319.60
  4. Step 4: Simplify right side
    581.62x = 256,517.35
  5. Step 5: Solve for x
    x = 256,517.35/581.62
  6. Step 6: Final answer
    x = 441.04

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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.