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Finding the Fourth Proportional to 525.02, 725.47 and 377.40

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Solution

The fourth proportional to 525.02, 725.47 and 377.40 is: 521.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.02 : 725.47 = 377.40 : x
  2. Step 2: Convert to fraction form
    525.02/725.47 = 377.40/x
  3. Step 3: Cross multiply
    525.02x = 725.47 × 377.40
  4. Step 4: Simplify right side
    525.02x = 273,792.38
  5. Step 5: Solve for x
    x = 273,792.38/525.02
  6. Step 6: Final answer
    x = 521.49

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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.