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Finding the Fourth Proportional to 1,233.60, 1,840 and 1,048.92

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Solution

The fourth proportional to 1,233.60, 1,840 and 1,048.92 is: 1,564.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,233.60 : 1,840 = 1,048.92 : x
  2. Step 2: Convert to fraction form
    1,233.60/1,840 = 1,048.92/x
  3. Step 3: Cross multiply
    1,233.60x = 1,840 × 1,048.92
  4. Step 4: Simplify right side
    1,233.60x = 1,930,012.80
  5. Step 5: Solve for x
    x = 1,930,012.80/1,233.60
  6. Step 6: Final answer
    x = 1,564.54

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.