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Finding the Fourth Proportional to 775.88, 1,070.75 and 461.07

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Solution

The fourth proportional to 775.88, 1,070.75 and 461.07 is: 636.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    775.88 : 1,070.75 = 461.07 : x
  2. Step 2: Convert to fraction form
    775.88/1,070.75 = 461.07/x
  3. Step 3: Cross multiply
    775.88x = 1,070.75 × 461.07
  4. Step 4: Simplify right side
    775.88x = 493,688.40
  5. Step 5: Solve for x
    x = 493,688.40/775.88
  6. Step 6: Final answer
    x = 636.30

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Double scale
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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.