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Finding the Fourth Proportional to 295.40, 443.18 and 89.98

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Solution

The fourth proportional to 295.40, 443.18 and 89.98 is: 134.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    295.40 : 443.18 = 89.98 : x
  2. Step 2: Convert to fraction form
    295.40/443.18 = 89.98/x
  3. Step 3: Cross multiply
    295.40x = 443.18 × 89.98
  4. Step 4: Simplify right side
    295.40x = 39,876.45
  5. Step 5: Solve for x
    x = 39,876.45/295.40
  6. Step 6: Final answer
    x = 134.99

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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.