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Finding the Fourth Proportional to 635.66, 953.78 and 580.98

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Solution

The fourth proportional to 635.66, 953.78 and 580.98 is: 871.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.66 : 953.78 = 580.98 : x
  2. Step 2: Convert to fraction form
    635.66/953.78 = 580.98/x
  3. Step 3: Cross multiply
    635.66x = 953.78 × 580.98
  4. Step 4: Simplify right side
    635.66x = 554,124.20
  5. Step 5: Solve for x
    x = 554,124.20/635.66
  6. Step 6: Final answer
    x = 871.74

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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.