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Finding the Fourth Proportional to 1,335.79, 2,003.96 and 470.17

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Solution

The fourth proportional to 1,335.79, 2,003.96 and 470.17 is: 705.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335.79 : 2,003.96 = 470.17 : x
  2. Step 2: Convert to fraction form
    1,335.79/2,003.96 = 470.17/x
  3. Step 3: Cross multiply
    1,335.79x = 2,003.96 × 470.17
  4. Step 4: Simplify right side
    1,335.79x = 942,201.87
  5. Step 5: Solve for x
    x = 942,201.87/1,335.79
  6. Step 6: Final answer
    x = 705.35

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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.