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Finding the Fourth Proportional to 895.37, 1,235.43 and 522.21

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Solution

The fourth proportional to 895.37, 1,235.43 and 522.21 is: 720.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.37 : 1,235.43 = 522.21 : x
  2. Step 2: Convert to fraction form
    895.37/1,235.43 = 522.21/x
  3. Step 3: Cross multiply
    895.37x = 1,235.43 × 522.21
  4. Step 4: Simplify right side
    895.37x = 645,153.90
  5. Step 5: Solve for x
    x = 645,153.90/895.37
  6. Step 6: Final answer
    x = 720.55

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Double scale
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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.