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Finding the Fourth Proportional to 540.77, 746.16 and 330.99

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Solution

The fourth proportional to 540.77, 746.16 and 330.99 is: 456.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.77 : 746.16 = 330.99 : x
  2. Step 2: Convert to fraction form
    540.77/746.16 = 330.99/x
  3. Step 3: Cross multiply
    540.77x = 746.16 × 330.99
  4. Step 4: Simplify right side
    540.77x = 246,971.50
  5. Step 5: Solve for x
    x = 246,971.50/540.77
  6. Step 6: Final answer
    x = 456.71

Related Problems

Find fourth proportional to 270.38, 373.08 and 165.50
Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.