Home / 1,126.03-1,688.81-304.11

Finding the Fourth Proportional to 1,126.03, 1,688.81 and 304.11

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Solution

The fourth proportional to 1,126.03, 1,688.81 and 304.11 is: 456.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.03 : 1,688.81 = 304.11 : x
  2. Step 2: Convert to fraction form
    1,126.03/1,688.81 = 304.11/x
  3. Step 3: Cross multiply
    1,126.03x = 1,688.81 × 304.11
  4. Step 4: Simplify right side
    1,126.03x = 513,584.01
  5. Step 5: Solve for x
    x = 513,584.01/1,126.03
  6. Step 6: Final answer
    x = 456.10

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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.