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Finding the Fourth Proportional to 541.77, 812.55 and 249.20

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Solution

The fourth proportional to 541.77, 812.55 and 249.20 is: 373.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.77 : 812.55 = 249.20 : x
  2. Step 2: Convert to fraction form
    541.77/812.55 = 249.20/x
  3. Step 3: Cross multiply
    541.77x = 812.55 × 249.20
  4. Step 4: Simplify right side
    541.77x = 202,483.40
  5. Step 5: Solve for x
    x = 202,483.40/541.77
  6. Step 6: Final answer
    x = 373.74

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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.