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Finding the Fourth Proportional to 606.15, 910.73 and 386.87

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Solution

The fourth proportional to 606.15, 910.73 and 386.87 is: 581.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.15 : 910.73 = 386.87 : x
  2. Step 2: Convert to fraction form
    606.15/910.73 = 386.87/x
  3. Step 3: Cross multiply
    606.15x = 910.73 × 386.87
  4. Step 4: Simplify right side
    606.15x = 352,330.53
  5. Step 5: Solve for x
    x = 352,330.53/606.15
  6. Step 6: Final answer
    x = 581.26

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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.