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Finding the Fourth Proportional to 1,335.12, 2,003.50 and 565.62

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Solution

The fourth proportional to 1,335.12, 2,003.50 and 565.62 is: 848.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335.12 : 2,003.50 = 565.62 : x
  2. Step 2: Convert to fraction form
    1,335.12/2,003.50 = 565.62/x
  3. Step 3: Cross multiply
    1,335.12x = 2,003.50 × 565.62
  4. Step 4: Simplify right side
    1,335.12x = 1,133,219.67
  5. Step 5: Solve for x
    x = 1,133,219.67/1,335.12
  6. Step 6: Final answer
    x = 848.78

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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.