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Finding the Fourth Proportional to 586.78, 879.62 and 201.76

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Solution

The fourth proportional to 586.78, 879.62 and 201.76 is: 302.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    586.78 : 879.62 = 201.76 : x
  2. Step 2: Convert to fraction form
    586.78/879.62 = 201.76/x
  3. Step 3: Cross multiply
    586.78x = 879.62 × 201.76
  4. Step 4: Simplify right side
    586.78x = 177,472.13
  5. Step 5: Solve for x
    x = 177,472.13/586.78
  6. Step 6: Final answer
    x = 302.45

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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.