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Finding the Fourth Proportional to 566.80, 782.19 and 330.75

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Solution

The fourth proportional to 566.80, 782.19 and 330.75 is: 456.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    566.80 : 782.19 = 330.75 : x
  2. Step 2: Convert to fraction form
    566.80/782.19 = 330.75/x
  3. Step 3: Cross multiply
    566.80x = 782.19 × 330.75
  4. Step 4: Simplify right side
    566.80x = 258,709.34
  5. Step 5: Solve for x
    x = 258,709.34/566.80
  6. Step 6: Final answer
    x = 456.44

Related Problems

Find fourth proportional to 283.40, 391.10 and 165.38
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.