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Finding the Fourth Proportional to 556.39, 835.30 and 453.87

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Solution

The fourth proportional to 556.39, 835.30 and 453.87 is: 681.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.39 : 835.30 = 453.87 : x
  2. Step 2: Convert to fraction form
    556.39/835.30 = 453.87/x
  3. Step 3: Cross multiply
    556.39x = 835.30 × 453.87
  4. Step 4: Simplify right side
    556.39x = 379,117.61
  5. Step 5: Solve for x
    x = 379,117.61/556.39
  6. Step 6: Final answer
    x = 681.39

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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.