Home / 1,325.46-1,985.97-666.45

Finding the Fourth Proportional to 1,325.46, 1,985.97 and 666.45

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Solution

The fourth proportional to 1,325.46, 1,985.97 and 666.45 is: 998.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325.46 : 1,985.97 = 666.45 : x
  2. Step 2: Convert to fraction form
    1,325.46/1,985.97 = 666.45/x
  3. Step 3: Cross multiply
    1,325.46x = 1,985.97 × 666.45
  4. Step 4: Simplify right side
    1,325.46x = 1,323,549.71
  5. Step 5: Solve for x
    x = 1,323,549.71/1,325.46
  6. Step 6: Final answer
    x = 998.56

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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.