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Finding the Fourth Proportional to 983, 1,356.58 and 540.94

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Solution

The fourth proportional to 983, 1,356.58 and 540.94 is: 746.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    983 : 1,356.58 = 540.94 : x
  2. Step 2: Convert to fraction form
    983/1,356.58 = 540.94/x
  3. Step 3: Cross multiply
    983x = 1,356.58 × 540.94
  4. Step 4: Simplify right side
    983x = 733,828.39
  5. Step 5: Solve for x
    x = 733,828.39/983
  6. Step 6: Final answer
    x = 746.52

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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.