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Finding the Fourth Proportional to 45.99, 63.50 and 28.77

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Solution

The fourth proportional to 45.99, 63.50 and 28.77 is: 39.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    45.99 : 63.50 = 28.77 : x
  2. Step 2: Convert to fraction form
    45.99/63.50 = 28.77/x
  3. Step 3: Cross multiply
    45.99x = 63.50 × 28.77
  4. Step 4: Simplify right side
    45.99x = 1,826.65
  5. Step 5: Solve for x
    x = 1,826.65/45.99
  6. Step 6: Final answer
    x = 39.72

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Find fourth proportional to 22.99, 31.75 and 14.38
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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.