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Finding the Fourth Proportional to 661.84, 992.68 and 174.93

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Solution

The fourth proportional to 661.84, 992.68 and 174.93 is: 262.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    661.84 : 992.68 = 174.93 : x
  2. Step 2: Convert to fraction form
    661.84/992.68 = 174.93/x
  3. Step 3: Cross multiply
    661.84x = 992.68 × 174.93
  4. Step 4: Simplify right side
    661.84x = 173,649.51
  5. Step 5: Solve for x
    x = 173,649.51/661.84
  6. Step 6: Final answer
    x = 262.37

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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.