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Finding the Fourth Proportional to 1,119.66, 1,679.52 and 534.73

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Solution

The fourth proportional to 1,119.66, 1,679.52 and 534.73 is: 802.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119.66 : 1,679.52 = 534.73 : x
  2. Step 2: Convert to fraction form
    1,119.66/1,679.52 = 534.73/x
  3. Step 3: Cross multiply
    1,119.66x = 1,679.52 × 534.73
  4. Step 4: Simplify right side
    1,119.66x = 898,087.06
  5. Step 5: Solve for x
    x = 898,087.06/1,119.66
  6. Step 6: Final answer
    x = 802.11

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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.