Home / 1,335.40-2,003.27-458.08

Finding the Fourth Proportional to 1,335.40, 2,003.27 and 458.08

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Solution

The fourth proportional to 1,335.40, 2,003.27 and 458.08 is: 687.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335.40 : 2,003.27 = 458.08 : x
  2. Step 2: Convert to fraction form
    1,335.40/2,003.27 = 458.08/x
  3. Step 3: Cross multiply
    1,335.40x = 2,003.27 × 458.08
  4. Step 4: Simplify right side
    1,335.40x = 917,657.92
  5. Step 5: Solve for x
    x = 917,657.92/1,335.40
  6. Step 6: Final answer
    x = 687.18

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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.