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Finding the Fourth Proportional to 636, 876.60 and 525.12

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Solution

The fourth proportional to 636, 876.60 and 525.12 is: 723.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    636 : 876.60 = 525.12 : x
  2. Step 2: Convert to fraction form
    636/876.60 = 525.12/x
  3. Step 3: Cross multiply
    636x = 876.60 × 525.12
  4. Step 4: Simplify right side
    636x = 460,320.19
  5. Step 5: Solve for x
    x = 460,320.19/636
  6. Step 6: Final answer
    x = 723.77

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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.