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Finding the Fourth Proportional to 895.34, 1,342.85 and 245.90

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Solution

The fourth proportional to 895.34, 1,342.85 and 245.90 is: 368.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.34 : 1,342.85 = 245.90 : x
  2. Step 2: Convert to fraction form
    895.34/1,342.85 = 245.90/x
  3. Step 3: Cross multiply
    895.34x = 1,342.85 × 245.90
  4. Step 4: Simplify right side
    895.34x = 330,198.87
  5. Step 5: Solve for x
    x = 330,198.87/895.34
  6. Step 6: Final answer
    x = 368.80

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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.