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Finding the Fourth Proportional to 581.76, 802.84 and 319.76

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Solution

The fourth proportional to 581.76, 802.84 and 319.76 is: 441.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.76 : 802.84 = 319.76 : x
  2. Step 2: Convert to fraction form
    581.76/802.84 = 319.76/x
  3. Step 3: Cross multiply
    581.76x = 802.84 × 319.76
  4. Step 4: Simplify right side
    581.76x = 256,716.12
  5. Step 5: Solve for x
    x = 256,716.12/581.76
  6. Step 6: Final answer
    x = 441.27

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