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Finding the Fourth Proportional to 1,134.51, 1,699.63 and 903.66

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Solution

The fourth proportional to 1,134.51, 1,699.63 and 903.66 is: 1,353.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,134.51 : 1,699.63 = 903.66 : x
  2. Step 2: Convert to fraction form
    1,134.51/1,699.63 = 903.66/x
  3. Step 3: Cross multiply
    1,134.51x = 1,699.63 × 903.66
  4. Step 4: Simplify right side
    1,134.51x = 1,535,884.10
  5. Step 5: Solve for x
    x = 1,535,884.10/1,134.51
  6. Step 6: Final answer
    x = 1,353.79

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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.