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Finding the Fourth Proportional to 630.74, 946.17 and 265.29

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Solution

The fourth proportional to 630.74, 946.17 and 265.29 is: 397.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.74 : 946.17 = 265.29 : x
  2. Step 2: Convert to fraction form
    630.74/946.17 = 265.29/x
  3. Step 3: Cross multiply
    630.74x = 946.17 × 265.29
  4. Step 4: Simplify right side
    630.74x = 251,009.44
  5. Step 5: Solve for x
    x = 251,009.44/630.74
  6. Step 6: Final answer
    x = 397.96

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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.