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Finding the Fourth Proportional to 518.46, 777.51 and 153.15

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Solution

The fourth proportional to 518.46, 777.51 and 153.15 is: 229.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.46 : 777.51 = 153.15 : x
  2. Step 2: Convert to fraction form
    518.46/777.51 = 153.15/x
  3. Step 3: Cross multiply
    518.46x = 777.51 × 153.15
  4. Step 4: Simplify right side
    518.46x = 119,075.66
  5. Step 5: Solve for x
    x = 119,075.66/518.46
  6. Step 6: Final answer
    x = 229.67

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Double scale
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Similar ratio
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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.