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Finding the Fourth Proportional to 541.10, 811.70 and 170.87

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Solution

The fourth proportional to 541.10, 811.70 and 170.87 is: 256.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.10 : 811.70 = 170.87 : x
  2. Step 2: Convert to fraction form
    541.10/811.70 = 170.87/x
  3. Step 3: Cross multiply
    541.10x = 811.70 × 170.87
  4. Step 4: Simplify right side
    541.10x = 138,695.18
  5. Step 5: Solve for x
    x = 138,695.18/541.10
  6. Step 6: Final answer
    x = 256.32

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Double scale
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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.