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Finding the Fourth Proportional to 992.53, 1,487.93 and 376.07

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Solution

The fourth proportional to 992.53, 1,487.93 and 376.07 is: 563.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    992.53 : 1,487.93 = 376.07 : x
  2. Step 2: Convert to fraction form
    992.53/1,487.93 = 376.07/x
  3. Step 3: Cross multiply
    992.53x = 1,487.93 × 376.07
  4. Step 4: Simplify right side
    992.53x = 559,563.95
  5. Step 5: Solve for x
    x = 559,563.95/992.53
  6. Step 6: Final answer
    x = 563.78

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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.