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Finding the Fourth Proportional to 606.40, 909.76 and 173.58

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Solution

The fourth proportional to 606.40, 909.76 and 173.58 is: 260.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.40 : 909.76 = 173.58 : x
  2. Step 2: Convert to fraction form
    606.40/909.76 = 173.58/x
  3. Step 3: Cross multiply
    606.40x = 909.76 × 173.58
  4. Step 4: Simplify right side
    606.40x = 157,916.14
  5. Step 5: Solve for x
    x = 157,916.14/606.40
  6. Step 6: Final answer
    x = 260.42

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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.