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Finding the Fourth Proportional to 573.54, 859.53 and 285.18

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Solution

The fourth proportional to 573.54, 859.53 and 285.18 is: 427.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.54 : 859.53 = 285.18 : x
  2. Step 2: Convert to fraction form
    573.54/859.53 = 285.18/x
  3. Step 3: Cross multiply
    573.54x = 859.53 × 285.18
  4. Step 4: Simplify right side
    573.54x = 245,120.77
  5. Step 5: Solve for x
    x = 245,120.77/573.54
  6. Step 6: Final answer
    x = 427.38

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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.