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Finding the Fourth Proportional to 573.40, 860.24 and 284.76

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Solution

The fourth proportional to 573.40, 860.24 and 284.76 is: 427.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.40 : 860.24 = 284.76 : x
  2. Step 2: Convert to fraction form
    573.40/860.24 = 284.76/x
  3. Step 3: Cross multiply
    573.40x = 860.24 × 284.76
  4. Step 4: Simplify right side
    573.40x = 244,961.94
  5. Step 5: Solve for x
    x = 244,961.94/573.40
  6. Step 6: Final answer
    x = 427.21

Related Problems

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.