Home / 1,267.28-1,901.20-536.72

Finding the Fourth Proportional to 1,267.28, 1,901.20 and 536.72

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Solution

The fourth proportional to 1,267.28, 1,901.20 and 536.72 is: 805.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,267.28 : 1,901.20 = 536.72 : x
  2. Step 2: Convert to fraction form
    1,267.28/1,901.20 = 536.72/x
  3. Step 3: Cross multiply
    1,267.28x = 1,901.20 × 536.72
  4. Step 4: Simplify right side
    1,267.28x = 1,020,412.06
  5. Step 5: Solve for x
    x = 1,020,412.06/1,267.28
  6. Step 6: Final answer
    x = 805.20

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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.