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Finding the Fourth Proportional to 511.32, 766.80 and 357.24

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Solution

The fourth proportional to 511.32, 766.80 and 357.24 is: 535.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.32 : 766.80 = 357.24 : x
  2. Step 2: Convert to fraction form
    511.32/766.80 = 357.24/x
  3. Step 3: Cross multiply
    511.32x = 766.80 × 357.24
  4. Step 4: Simplify right side
    511.32x = 273,931.63
  5. Step 5: Solve for x
    x = 273,931.63/511.32
  6. Step 6: Final answer
    x = 535.73

Related Problems

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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.