Home / 1,052.20-1,577.42-436.34

Finding the Fourth Proportional to 1,052.20, 1,577.42 and 436.34

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Solution

The fourth proportional to 1,052.20, 1,577.42 and 436.34 is: 654.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,052.20 : 1,577.42 = 436.34 : x
  2. Step 2: Convert to fraction form
    1,052.20/1,577.42 = 436.34/x
  3. Step 3: Cross multiply
    1,052.20x = 1,577.42 × 436.34
  4. Step 4: Simplify right side
    1,052.20x = 688,291.44
  5. Step 5: Solve for x
    x = 688,291.44/1,052.20
  6. Step 6: Final answer
    x = 654.15

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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.