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Finding the Fourth Proportional to 936.48, 1,400.54 and 702.79

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Solution

The fourth proportional to 936.48, 1,400.54 and 702.79 is: 1,051.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    936.48 : 1,400.54 = 702.79 : x
  2. Step 2: Convert to fraction form
    936.48/1,400.54 = 702.79/x
  3. Step 3: Cross multiply
    936.48x = 1,400.54 × 702.79
  4. Step 4: Simplify right side
    936.48x = 984,285.51
  5. Step 5: Solve for x
    x = 984,285.51/936.48
  6. Step 6: Final answer
    x = 1,051.05

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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.