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Finding the Fourth Proportional to 983.02, 1,356.56 and 534.89

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Solution

The fourth proportional to 983.02, 1,356.56 and 534.89 is: 738.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    983.02 : 1,356.56 = 534.89 : x
  2. Step 2: Convert to fraction form
    983.02/1,356.56 = 534.89/x
  3. Step 3: Cross multiply
    983.02x = 1,356.56 × 534.89
  4. Step 4: Simplify right side
    983.02x = 725,600.92
  5. Step 5: Solve for x
    x = 725,600.92/983.02
  6. Step 6: Final answer
    x = 738.14

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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.