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Finding the Fourth Proportional to 630.15, 938.73 and 611.04

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Solution

The fourth proportional to 630.15, 938.73 and 611.04 is: 910.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.15 : 938.73 = 611.04 : x
  2. Step 2: Convert to fraction form
    630.15/938.73 = 611.04/x
  3. Step 3: Cross multiply
    630.15x = 938.73 × 611.04
  4. Step 4: Simplify right side
    630.15x = 573,601.58
  5. Step 5: Solve for x
    x = 573,601.58/630.15
  6. Step 6: Final answer
    x = 910.26

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.