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Finding the Fourth Proportional to 525.30, 787.02 and 443.55

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Solution

The fourth proportional to 525.30, 787.02 and 443.55 is: 664.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.30 : 787.02 = 443.55 : x
  2. Step 2: Convert to fraction form
    525.30/787.02 = 443.55/x
  3. Step 3: Cross multiply
    525.30x = 787.02 × 443.55
  4. Step 4: Simplify right side
    525.30x = 349,081.80
  5. Step 5: Solve for x
    x = 349,081.80/525.30
  6. Step 6: Final answer
    x = 664.54

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.