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Finding the Fourth Proportional to 1,523.37, 2,285.14 and 427.65

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Solution

The fourth proportional to 1,523.37, 2,285.14 and 427.65 is: 641.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,523.37 : 2,285.14 = 427.65 : x
  2. Step 2: Convert to fraction form
    1,523.37/2,285.14 = 427.65/x
  3. Step 3: Cross multiply
    1,523.37x = 2,285.14 × 427.65
  4. Step 4: Simplify right side
    1,523.37x = 977,240.12
  5. Step 5: Solve for x
    x = 977,240.12/1,523.37
  6. Step 6: Final answer
    x = 641.50

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Double scale
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1.5x scale

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.