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Finding the Fourth Proportional to 525.15, 724.59 and 292.28

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Solution

The fourth proportional to 525.15, 724.59 and 292.28 is: 403.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.15 : 724.59 = 292.28 : x
  2. Step 2: Convert to fraction form
    525.15/724.59 = 292.28/x
  3. Step 3: Cross multiply
    525.15x = 724.59 × 292.28
  4. Step 4: Simplify right side
    525.15x = 211,779.54
  5. Step 5: Solve for x
    x = 211,779.54/525.15
  6. Step 6: Final answer
    x = 403.27

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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.