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Finding the Fourth Proportional to 660.90, 910.17 and 602.49

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Solution

The fourth proportional to 660.90, 910.17 and 602.49 is: 829.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    660.90 : 910.17 = 602.49 : x
  2. Step 2: Convert to fraction form
    660.90/910.17 = 602.49/x
  3. Step 3: Cross multiply
    660.90x = 910.17 × 602.49
  4. Step 4: Simplify right side
    660.90x = 548,368.32
  5. Step 5: Solve for x
    x = 548,368.32/660.90
  6. Step 6: Final answer
    x = 829.73

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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.