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Finding the Fourth Proportional to 1,358.39, 2,037.89 and 433.98

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Solution

The fourth proportional to 1,358.39, 2,037.89 and 433.98 is: 651.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,358.39 : 2,037.89 = 433.98 : x
  2. Step 2: Convert to fraction form
    1,358.39/2,037.89 = 433.98/x
  3. Step 3: Cross multiply
    1,358.39x = 2,037.89 × 433.98
  4. Step 4: Simplify right side
    1,358.39x = 884,401.33
  5. Step 5: Solve for x
    x = 884,401.33/1,358.39
  6. Step 6: Final answer
    x = 651.07

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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.