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Finding the Fourth Proportional to 1,032.21, 1,424.49 and 738.18

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Solution

The fourth proportional to 1,032.21, 1,424.49 and 738.18 is: 1,018.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,032.21 : 1,424.49 = 738.18 : x
  2. Step 2: Convert to fraction form
    1,032.21/1,424.49 = 738.18/x
  3. Step 3: Cross multiply
    1,032.21x = 1,424.49 × 738.18
  4. Step 4: Simplify right side
    1,032.21x = 1,051,530.03
  5. Step 5: Solve for x
    x = 1,051,530.03/1,032.21
  6. Step 6: Final answer
    x = 1,018.72

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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.