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Finding the Fourth Proportional to 1,151.91, 1,726.11 and 501.75

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Solution

The fourth proportional to 1,151.91, 1,726.11 and 501.75 is: 751.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,151.91 : 1,726.11 = 501.75 : x
  2. Step 2: Convert to fraction form
    1,151.91/1,726.11 = 501.75/x
  3. Step 3: Cross multiply
    1,151.91x = 1,726.11 × 501.75
  4. Step 4: Simplify right side
    1,151.91x = 866,075.69
  5. Step 5: Solve for x
    x = 866,075.69/1,151.91
  6. Step 6: Final answer
    x = 751.86

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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.