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Finding the Fourth Proportional to 790.47, 1,183.46 and 443.18

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Solution

The fourth proportional to 790.47, 1,183.46 and 443.18 is: 663.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    790.47 : 1,183.46 = 443.18 : x
  2. Step 2: Convert to fraction form
    790.47/1,183.46 = 443.18/x
  3. Step 3: Cross multiply
    790.47x = 1,183.46 × 443.18
  4. Step 4: Simplify right side
    790.47x = 524,479.89
  5. Step 5: Solve for x
    x = 524,479.89/790.47
  6. Step 6: Final answer
    x = 663.51

Related Problems

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Half scale
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Double scale
Find fourth proportional to 791.47, 1,184.96 and 444.18
Similar ratio
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1.5x scale

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.