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Finding the Fourth Proportional to 540.76, 811.14 and 267.19

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Solution

The fourth proportional to 540.76, 811.14 and 267.19 is: 400.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.76 : 811.14 = 267.19 : x
  2. Step 2: Convert to fraction form
    540.76/811.14 = 267.19/x
  3. Step 3: Cross multiply
    540.76x = 811.14 × 267.19
  4. Step 4: Simplify right side
    540.76x = 216,728.50
  5. Step 5: Solve for x
    x = 216,728.50/540.76
  6. Step 6: Final answer
    x = 400.79

Related Problems

Find fourth proportional to 270.38, 405.57 and 133.60
Half scale
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Double scale
Find fourth proportional to 541.76, 812.64 and 268.19
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.