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Finding the Fourth Proportional to 1,065.78, 1,598.90 and 795.11

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Solution

The fourth proportional to 1,065.78, 1,598.90 and 795.11 is: 1,192.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,065.78 : 1,598.90 = 795.11 : x
  2. Step 2: Convert to fraction form
    1,065.78/1,598.90 = 795.11/x
  3. Step 3: Cross multiply
    1,065.78x = 1,598.90 × 795.11
  4. Step 4: Simplify right side
    1,065.78x = 1,271,289.41
  5. Step 5: Solve for x
    x = 1,271,289.41/1,065.78
  6. Step 6: Final answer
    x = 1,192.83

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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.