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Finding the Fourth Proportional to 939.16, 1,295.42 and 603.14

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Solution

The fourth proportional to 939.16, 1,295.42 and 603.14 is: 831.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    939.16 : 1,295.42 = 603.14 : x
  2. Step 2: Convert to fraction form
    939.16/1,295.42 = 603.14/x
  3. Step 3: Cross multiply
    939.16x = 1,295.42 × 603.14
  4. Step 4: Simplify right side
    939.16x = 781,310.13
  5. Step 5: Solve for x
    x = 781,310.13/939.16
  6. Step 6: Final answer
    x = 831.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.