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Finding the Fourth Proportional to 1,329.93, 1,994.67 and 356.13

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Solution

The fourth proportional to 1,329.93, 1,994.67 and 356.13 is: 534.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329.93 : 1,994.67 = 356.13 : x
  2. Step 2: Convert to fraction form
    1,329.93/1,994.67 = 356.13/x
  3. Step 3: Cross multiply
    1,329.93x = 1,994.67 × 356.13
  4. Step 4: Simplify right side
    1,329.93x = 710,361.83
  5. Step 5: Solve for x
    x = 710,361.83/1,329.93
  6. Step 6: Final answer
    x = 534.13

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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.