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Finding the Fourth Proportional to 1,322.80, 1,985.49 and 952.99

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Solution

The fourth proportional to 1,322.80, 1,985.49 and 952.99 is: 1,430.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,322.80 : 1,985.49 = 952.99 : x
  2. Step 2: Convert to fraction form
    1,322.80/1,985.49 = 952.99/x
  3. Step 3: Cross multiply
    1,322.80x = 1,985.49 × 952.99
  4. Step 4: Simplify right side
    1,322.80x = 1,892,152.12
  5. Step 5: Solve for x
    x = 1,892,152.12/1,322.80
  6. Step 6: Final answer
    x = 1,430.41

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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.