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Finding the Fourth Proportional to 942.41, 1,415.00 and 925.80

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Solution

The fourth proportional to 942.41, 1,415.00 and 925.80 is: 1,390.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    942.41 : 1,415.00 = 925.80 : x
  2. Step 2: Convert to fraction form
    942.41/1,415.00 = 925.80/x
  3. Step 3: Cross multiply
    942.41x = 1,415.00 × 925.80
  4. Step 4: Simplify right side
    942.41x = 1,310,002.37
  5. Step 5: Solve for x
    x = 1,310,002.37/942.41
  6. Step 6: Final answer
    x = 1,390.06

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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.