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Finding the Fourth Proportional to 1,566.13, 2,161.21 and 903.01

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Solution

The fourth proportional to 1,566.13, 2,161.21 and 903.01 is: 1,246.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,566.13 : 2,161.21 = 903.01 : x
  2. Step 2: Convert to fraction form
    1,566.13/2,161.21 = 903.01/x
  3. Step 3: Cross multiply
    1,566.13x = 2,161.21 × 903.01
  4. Step 4: Simplify right side
    1,566.13x = 1,951,594.24
  5. Step 5: Solve for x
    x = 1,951,594.24/1,566.13
  6. Step 6: Final answer
    x = 1,246.13

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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.