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Finding the Fourth Proportional to 1,374.98, 2,062.67 and 553.23

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Solution

The fourth proportional to 1,374.98, 2,062.67 and 553.23 is: 829.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,374.98 : 2,062.67 = 553.23 : x
  2. Step 2: Convert to fraction form
    1,374.98/2,062.67 = 553.23/x
  3. Step 3: Cross multiply
    1,374.98x = 2,062.67 × 553.23
  4. Step 4: Simplify right side
    1,374.98x = 1,141,128.16
  5. Step 5: Solve for x
    x = 1,141,128.16/1,374.98
  6. Step 6: Final answer
    x = 829.93

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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.