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Finding the Fourth Proportional to 1,186.99, 1,636.52 and 973.52

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Solution

The fourth proportional to 1,186.99, 1,636.52 and 973.52 is: 1,342.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186.99 : 1,636.52 = 973.52 : x
  2. Step 2: Convert to fraction form
    1,186.99/1,636.52 = 973.52/x
  3. Step 3: Cross multiply
    1,186.99x = 1,636.52 × 973.52
  4. Step 4: Simplify right side
    1,186.99x = 1,593,184.95
  5. Step 5: Solve for x
    x = 1,593,184.95/1,186.99
  6. Step 6: Final answer
    x = 1,342.21

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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.