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Finding the Fourth Proportional to 1,665.63, 2,298.78 and 966.99

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Solution

The fourth proportional to 1,665.63, 2,298.78 and 966.99 is: 1,334.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,665.63 : 2,298.78 = 966.99 : x
  2. Step 2: Convert to fraction form
    1,665.63/2,298.78 = 966.99/x
  3. Step 3: Cross multiply
    1,665.63x = 2,298.78 × 966.99
  4. Step 4: Simplify right side
    1,665.63x = 2,222,897.27
  5. Step 5: Solve for x
    x = 2,222,897.27/1,665.63
  6. Step 6: Final answer
    x = 1,334.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.