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Finding the Fourth Proportional to 525.95, 725.54 and 443.01

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Solution

The fourth proportional to 525.95, 725.54 and 443.01 is: 611.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.95 : 725.54 = 443.01 : x
  2. Step 2: Convert to fraction form
    525.95/725.54 = 443.01/x
  3. Step 3: Cross multiply
    525.95x = 725.54 × 443.01
  4. Step 4: Simplify right side
    525.95x = 321,421.48
  5. Step 5: Solve for x
    x = 321,421.48/525.95
  6. Step 6: Final answer
    x = 611.13

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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.