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Finding the Fourth Proportional to 1,041.80, 1,562.72 and 272.32

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Solution

The fourth proportional to 1,041.80, 1,562.72 and 272.32 is: 408.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,041.80 : 1,562.72 = 272.32 : x
  2. Step 2: Convert to fraction form
    1,041.80/1,562.72 = 272.32/x
  3. Step 3: Cross multiply
    1,041.80x = 1,562.72 × 272.32
  4. Step 4: Simplify right side
    1,041.80x = 425,559.91
  5. Step 5: Solve for x
    x = 425,559.91/1,041.80
  6. Step 6: Final answer
    x = 408.49

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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.