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Finding the Fourth Proportional to 775.38, 1,070.53 and 481.08

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Solution

The fourth proportional to 775.38, 1,070.53 and 481.08 is: 664.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    775.38 : 1,070.53 = 481.08 : x
  2. Step 2: Convert to fraction form
    775.38/1,070.53 = 481.08/x
  3. Step 3: Cross multiply
    775.38x = 1,070.53 × 481.08
  4. Step 4: Simplify right side
    775.38x = 515,010.57
  5. Step 5: Solve for x
    x = 515,010.57/775.38
  6. Step 6: Final answer
    x = 664.20

Related Problems

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Half scale
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Double scale
Find fourth proportional to 776.38, 1,071.91 and 482.08
Similar ratio
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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.