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Finding the Fourth Proportional to 1,118.49, 1,677.74 and 502.22

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Solution

The fourth proportional to 1,118.49, 1,677.74 and 502.22 is: 753.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118.49 : 1,677.74 = 502.22 : x
  2. Step 2: Convert to fraction form
    1,118.49/1,677.74 = 502.22/x
  3. Step 3: Cross multiply
    1,118.49x = 1,677.74 × 502.22
  4. Step 4: Simplify right side
    1,118.49x = 842,583.68
  5. Step 5: Solve for x
    x = 842,583.68/1,118.49
  6. Step 6: Final answer
    x = 753.32

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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.