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Finding the Fourth Proportional to 632.07, 947.75 and 485.46

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Solution

The fourth proportional to 632.07, 947.75 and 485.46 is: 727.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.07 : 947.75 = 485.46 : x
  2. Step 2: Convert to fraction form
    632.07/947.75 = 485.46/x
  3. Step 3: Cross multiply
    632.07x = 947.75 × 485.46
  4. Step 4: Simplify right side
    632.07x = 460,092.29
  5. Step 5: Solve for x
    x = 460,092.29/632.07
  6. Step 6: Final answer
    x = 727.91

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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.