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Finding the Fourth Proportional to 525.45, 725.24 and 304.53

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Solution

The fourth proportional to 525.45, 725.24 and 304.53 is: 420.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.45 : 725.24 = 304.53 : x
  2. Step 2: Convert to fraction form
    525.45/725.24 = 304.53/x
  3. Step 3: Cross multiply
    525.45x = 725.24 × 304.53
  4. Step 4: Simplify right side
    525.45x = 220,856.48
  5. Step 5: Solve for x
    x = 220,856.48/525.45
  6. Step 6: Final answer
    x = 420.32

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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.