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Finding the Fourth Proportional to 1,204.77, 1,806.62 and 424.61

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Solution

The fourth proportional to 1,204.77, 1,806.62 and 424.61 is: 636.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,204.77 : 1,806.62 = 424.61 : x
  2. Step 2: Convert to fraction form
    1,204.77/1,806.62 = 424.61/x
  3. Step 3: Cross multiply
    1,204.77x = 1,806.62 × 424.61
  4. Step 4: Simplify right side
    1,204.77x = 767,097.76
  5. Step 5: Solve for x
    x = 767,097.76/1,204.77
  6. Step 6: Final answer
    x = 636.72

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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.