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Finding the Fourth Proportional to 1,152.95, 1,728.71 and 495.25

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Solution

The fourth proportional to 1,152.95, 1,728.71 and 495.25 is: 742.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152.95 : 1,728.71 = 495.25 : x
  2. Step 2: Convert to fraction form
    1,152.95/1,728.71 = 495.25/x
  3. Step 3: Cross multiply
    1,152.95x = 1,728.71 × 495.25
  4. Step 4: Simplify right side
    1,152.95x = 856,136.83
  5. Step 5: Solve for x
    x = 856,136.83/1,152.95
  6. Step 6: Final answer
    x = 742.57

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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.