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Finding the Fourth Proportional to 525.40, 723.80 and 367.74

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Solution

The fourth proportional to 525.40, 723.80 and 367.74 is: 506.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.40 : 723.80 = 367.74 : x
  2. Step 2: Convert to fraction form
    525.40/723.80 = 367.74/x
  3. Step 3: Cross multiply
    525.40x = 723.80 × 367.74
  4. Step 4: Simplify right side
    525.40x = 266,170.21
  5. Step 5: Solve for x
    x = 266,170.21/525.40
  6. Step 6: Final answer
    x = 506.60

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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.