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Finding the Fourth Proportional to 630.58, 946.38 and 265.61

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Solution

The fourth proportional to 630.58, 946.38 and 265.61 is: 398.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.58 : 946.38 = 265.61 : x
  2. Step 2: Convert to fraction form
    630.58/946.38 = 265.61/x
  3. Step 3: Cross multiply
    630.58x = 946.38 × 265.61
  4. Step 4: Simplify right side
    630.58x = 251,367.99
  5. Step 5: Solve for x
    x = 251,367.99/630.58
  6. Step 6: Final answer
    x = 398.63

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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.