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Finding the Fourth Proportional to 1,358.19, 2,035.86 and 628.24

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Solution

The fourth proportional to 1,358.19, 2,035.86 and 628.24 is: 941.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,358.19 : 2,035.86 = 628.24 : x
  2. Step 2: Convert to fraction form
    1,358.19/2,035.86 = 628.24/x
  3. Step 3: Cross multiply
    1,358.19x = 2,035.86 × 628.24
  4. Step 4: Simplify right side
    1,358.19x = 1,279,008.69
  5. Step 5: Solve for x
    x = 1,279,008.69/1,358.19
  6. Step 6: Final answer
    x = 941.70

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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.