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Finding the Fourth Proportional to 660.04, 910.18 and 572.52

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Solution

The fourth proportional to 660.04, 910.18 and 572.52 is: 789.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    660.04 : 910.18 = 572.52 : x
  2. Step 2: Convert to fraction form
    660.04/910.18 = 572.52/x
  3. Step 3: Cross multiply
    660.04x = 910.18 × 572.52
  4. Step 4: Simplify right side
    660.04x = 521,096.25
  5. Step 5: Solve for x
    x = 521,096.25/660.04
  6. Step 6: Final answer
    x = 789.49

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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.