Home / 1,052.20-1,451.40-632.32

Finding the Fourth Proportional to 1,052.20, 1,451.40 and 632.32

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Solution

The fourth proportional to 1,052.20, 1,451.40 and 632.32 is: 872.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,052.20 : 1,451.40 = 632.32 : x
  2. Step 2: Convert to fraction form
    1,052.20/1,451.40 = 632.32/x
  3. Step 3: Cross multiply
    1,052.20x = 1,451.40 × 632.32
  4. Step 4: Simplify right side
    1,052.20x = 917,749.25
  5. Step 5: Solve for x
    x = 917,749.25/1,052.20
  6. Step 6: Final answer
    x = 872.22

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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.