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Finding the Fourth Proportional to 1,144.20, 1,715.88 and 374.52

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Solution

The fourth proportional to 1,144.20, 1,715.88 and 374.52 is: 561.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,144.20 : 1,715.88 = 374.52 : x
  2. Step 2: Convert to fraction form
    1,144.20/1,715.88 = 374.52/x
  3. Step 3: Cross multiply
    1,144.20x = 1,715.88 × 374.52
  4. Step 4: Simplify right side
    1,144.20x = 642,631.38
  5. Step 5: Solve for x
    x = 642,631.38/1,144.20
  6. Step 6: Final answer
    x = 561.64

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Double scale
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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.