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Finding the Fourth Proportional to 1,602.31, 2,211.19 and 903.69

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Solution

The fourth proportional to 1,602.31, 2,211.19 and 903.69 is: 1,247.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,602.31 : 2,211.19 = 903.69 : x
  2. Step 2: Convert to fraction form
    1,602.31/2,211.19 = 903.69/x
  3. Step 3: Cross multiply
    1,602.31x = 2,211.19 × 903.69
  4. Step 4: Simplify right side
    1,602.31x = 1,998,230.29
  5. Step 5: Solve for x
    x = 1,998,230.29/1,602.31
  6. Step 6: Final answer
    x = 1,247.09

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1.5x scale

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.