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Finding the Fourth Proportional to 525.98, 725.86 and 289.93

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Solution

The fourth proportional to 525.98, 725.86 and 289.93 is: 400.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.98 : 725.86 = 289.93 : x
  2. Step 2: Convert to fraction form
    525.98/725.86 = 289.93/x
  3. Step 3: Cross multiply
    525.98x = 725.86 × 289.93
  4. Step 4: Simplify right side
    525.98x = 210,448.59
  5. Step 5: Solve for x
    x = 210,448.59/525.98
  6. Step 6: Final answer
    x = 400.11

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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.