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Finding the Fourth Proportional to 609.57, 910.40 and 527.49

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Solution

The fourth proportional to 609.57, 910.40 and 527.49 is: 787.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.57 : 910.40 = 527.49 : x
  2. Step 2: Convert to fraction form
    609.57/910.40 = 527.49/x
  3. Step 3: Cross multiply
    609.57x = 910.40 × 527.49
  4. Step 4: Simplify right side
    609.57x = 480,224.26
  5. Step 5: Solve for x
    x = 480,224.26/609.57
  6. Step 6: Final answer
    x = 787.81

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.