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Finding the Fourth Proportional to 536.12, 802.96 and 319.24

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Solution

The fourth proportional to 536.12, 802.96 and 319.24 is: 478.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.12 : 802.96 = 319.24 : x
  2. Step 2: Convert to fraction form
    536.12/802.96 = 319.24/x
  3. Step 3: Cross multiply
    536.12x = 802.96 × 319.24
  4. Step 4: Simplify right side
    536.12x = 256,338.95
  5. Step 5: Solve for x
    x = 256,338.95/536.12
  6. Step 6: Final answer
    x = 478.14

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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.