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Finding the Fourth Proportional to 1,100.55, 1,518.76 and 603.19

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Solution

The fourth proportional to 1,100.55, 1,518.76 and 603.19 is: 832.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,100.55 : 1,518.76 = 603.19 : x
  2. Step 2: Convert to fraction form
    1,100.55/1,518.76 = 603.19/x
  3. Step 3: Cross multiply
    1,100.55x = 1,518.76 × 603.19
  4. Step 4: Simplify right side
    1,100.55x = 916,096.68
  5. Step 5: Solve for x
    x = 916,096.68/1,100.55
  6. Step 6: Final answer
    x = 832.40

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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.