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Finding the Fourth Proportional to 1,201.47, 1,658.03 and 677.51

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Solution

The fourth proportional to 1,201.47, 1,658.03 and 677.51 is: 934.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,201.47 : 1,658.03 = 677.51 : x
  2. Step 2: Convert to fraction form
    1,201.47/1,658.03 = 677.51/x
  3. Step 3: Cross multiply
    1,201.47x = 1,658.03 × 677.51
  4. Step 4: Simplify right side
    1,201.47x = 1,123,331.91
  5. Step 5: Solve for x
    x = 1,123,331.91/1,201.47
  6. Step 6: Final answer
    x = 934.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.