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Finding the Fourth Proportional to 568.18, 857.51 and 553.60

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Solution

The fourth proportional to 568.18, 857.51 and 553.60 is: 835.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.18 : 857.51 = 553.60 : x
  2. Step 2: Convert to fraction form
    568.18/857.51 = 553.60/x
  3. Step 3: Cross multiply
    568.18x = 857.51 × 553.60
  4. Step 4: Simplify right side
    568.18x = 474,717.54
  5. Step 5: Solve for x
    x = 474,717.54/568.18
  6. Step 6: Final answer
    x = 835.51

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.