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Finding the Fourth Proportional to 1,777.54, 2,666.32 and 803.42

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Solution

The fourth proportional to 1,777.54, 2,666.32 and 803.42 is: 1,205.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,777.54 : 2,666.32 = 803.42 : x
  2. Step 2: Convert to fraction form
    1,777.54/2,666.32 = 803.42/x
  3. Step 3: Cross multiply
    1,777.54x = 2,666.32 × 803.42
  4. Step 4: Simplify right side
    1,777.54x = 2,142,174.81
  5. Step 5: Solve for x
    x = 2,142,174.81/1,777.54
  6. Step 6: Final answer
    x = 1,205.13

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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.