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Finding the Fourth Proportional to 467.58, 700.11 and 438.72

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Solution

The fourth proportional to 467.58, 700.11 and 438.72 is: 656.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    467.58 : 700.11 = 438.72 : x
  2. Step 2: Convert to fraction form
    467.58/700.11 = 438.72/x
  3. Step 3: Cross multiply
    467.58x = 700.11 × 438.72
  4. Step 4: Simplify right side
    467.58x = 307,152.26
  5. Step 5: Solve for x
    x = 307,152.26/467.58
  6. Step 6: Final answer
    x = 656.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.