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Finding the Fourth Proportional to 525.10, 724.84 and 469.74

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Solution

The fourth proportional to 525.10, 724.84 and 469.74 is: 648.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.10 : 724.84 = 469.74 : x
  2. Step 2: Convert to fraction form
    525.10/724.84 = 469.74/x
  3. Step 3: Cross multiply
    525.10x = 724.84 × 469.74
  4. Step 4: Simplify right side
    525.10x = 340,486.34
  5. Step 5: Solve for x
    x = 340,486.34/525.10
  6. Step 6: Final answer
    x = 648.42

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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.