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Finding the Fourth Proportional to 551.67, 761.09 and 352.51

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Solution

The fourth proportional to 551.67, 761.09 and 352.51 is: 486.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.67 : 761.09 = 352.51 : x
  2. Step 2: Convert to fraction form
    551.67/761.09 = 352.51/x
  3. Step 3: Cross multiply
    551.67x = 761.09 × 352.51
  4. Step 4: Simplify right side
    551.67x = 268,291.84
  5. Step 5: Solve for x
    x = 268,291.84/551.67
  6. Step 6: Final answer
    x = 486.33

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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.