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Finding the Fourth Proportional to 1,171.06, 1,756.59 and 652.12

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Solution

The fourth proportional to 1,171.06, 1,756.59 and 652.12 is: 978.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,171.06 : 1,756.59 = 652.12 : x
  2. Step 2: Convert to fraction form
    1,171.06/1,756.59 = 652.12/x
  3. Step 3: Cross multiply
    1,171.06x = 1,756.59 × 652.12
  4. Step 4: Simplify right side
    1,171.06x = 1,145,507.47
  5. Step 5: Solve for x
    x = 1,145,507.47/1,171.06
  6. Step 6: Final answer
    x = 978.18

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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.