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Finding the Fourth Proportional to 541.03, 811.55 and 130.17

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Solution

The fourth proportional to 541.03, 811.55 and 130.17 is: 195.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.03 : 811.55 = 130.17 : x
  2. Step 2: Convert to fraction form
    541.03/811.55 = 130.17/x
  3. Step 3: Cross multiply
    541.03x = 811.55 × 130.17
  4. Step 4: Simplify right side
    541.03x = 105,638.86
  5. Step 5: Solve for x
    x = 105,638.86/541.03
  6. Step 6: Final answer
    x = 195.25

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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.