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Finding the Fourth Proportional to 65.19, 90 and 44.49

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Solution

The fourth proportional to 65.19, 90 and 44.49 is: 61.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    65.19 : 90 = 44.49 : x
  2. Step 2: Convert to fraction form
    65.19/90 = 44.49/x
  3. Step 3: Cross multiply
    65.19x = 90 × 44.49
  4. Step 4: Simplify right side
    65.19x = 4,004.10
  5. Step 5: Solve for x
    x = 4,004.10/65.19
  6. Step 6: Final answer
    x = 61.42

Related Problems

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1.5x scale

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.