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Finding the Fourth Proportional to 1,254.60, 1,728 and 1,088.82

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Solution

The fourth proportional to 1,254.60, 1,728 and 1,088.82 is: 1,499.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,254.60 : 1,728 = 1,088.82 : x
  2. Step 2: Convert to fraction form
    1,254.60/1,728 = 1,088.82/x
  3. Step 3: Cross multiply
    1,254.60x = 1,728 × 1,088.82
  4. Step 4: Simplify right side
    1,254.60x = 1,881,480.96
  5. Step 5: Solve for x
    x = 1,881,480.96/1,254.60
  6. Step 6: Final answer
    x = 1,499.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.