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Finding the Fourth Proportional to 1,126.42, 1,554.73 and 732.76

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Solution

The fourth proportional to 1,126.42, 1,554.73 and 732.76 is: 1,011.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.42 : 1,554.73 = 732.76 : x
  2. Step 2: Convert to fraction form
    1,126.42/1,554.73 = 732.76/x
  3. Step 3: Cross multiply
    1,126.42x = 1,554.73 × 732.76
  4. Step 4: Simplify right side
    1,126.42x = 1,139,246.98
  5. Step 5: Solve for x
    x = 1,139,246.98/1,126.42
  6. Step 6: Final answer
    x = 1,011.38

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Half scale
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1.5x scale

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.