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Finding the Fourth Proportional to 1,424.47, 2,135.23 and 546.74

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Solution

The fourth proportional to 1,424.47, 2,135.23 and 546.74 is: 819.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424.47 : 2,135.23 = 546.74 : x
  2. Step 2: Convert to fraction form
    1,424.47/2,135.23 = 546.74/x
  3. Step 3: Cross multiply
    1,424.47x = 2,135.23 × 546.74
  4. Step 4: Simplify right side
    1,424.47x = 1,167,403.61
  5. Step 5: Solve for x
    x = 1,167,403.61/1,424.47
  6. Step 6: Final answer
    x = 819.54

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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.