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Finding the Fourth Proportional to 1,169.65, 1,753.95 and 347.64

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Solution

The fourth proportional to 1,169.65, 1,753.95 and 347.64 is: 521.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,169.65 : 1,753.95 = 347.64 : x
  2. Step 2: Convert to fraction form
    1,169.65/1,753.95 = 347.64/x
  3. Step 3: Cross multiply
    1,169.65x = 1,753.95 × 347.64
  4. Step 4: Simplify right side
    1,169.65x = 609,737.90
  5. Step 5: Solve for x
    x = 609,737.90/1,169.65
  6. Step 6: Final answer
    x = 521.30

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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.