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Finding the Fourth Proportional to 2,225.57, 3,337.70 and 665.51

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Solution

The fourth proportional to 2,225.57, 3,337.70 and 665.51 is: 998.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,225.57 : 3,337.70 = 665.51 : x
  2. Step 2: Convert to fraction form
    2,225.57/3,337.70 = 665.51/x
  3. Step 3: Cross multiply
    2,225.57x = 3,337.70 × 665.51
  4. Step 4: Simplify right side
    2,225.57x = 2,221,252.71
  5. Step 5: Solve for x
    x = 2,221,252.71/2,225.57
  6. Step 6: Final answer
    x = 998.06

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1.5x scale

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.