Home / 1,126.23-1,688.70-346.03

Finding the Fourth Proportional to 1,126.23, 1,688.70 and 346.03

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Solution

The fourth proportional to 1,126.23, 1,688.70 and 346.03 is: 518.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.23 : 1,688.70 = 346.03 : x
  2. Step 2: Convert to fraction form
    1,126.23/1,688.70 = 346.03/x
  3. Step 3: Cross multiply
    1,126.23x = 1,688.70 × 346.03
  4. Step 4: Simplify right side
    1,126.23x = 584,336.64
  5. Step 5: Solve for x
    x = 584,336.64/1,126.23
  6. Step 6: Final answer
    x = 518.84

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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.