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Finding the Fourth Proportional to 1,468.72, 2,203.08 and 442.72

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Solution

The fourth proportional to 1,468.72, 2,203.08 and 442.72 is: 664.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,468.72 : 2,203.08 = 442.72 : x
  2. Step 2: Convert to fraction form
    1,468.72/2,203.08 = 442.72/x
  3. Step 3: Cross multiply
    1,468.72x = 2,203.08 × 442.72
  4. Step 4: Simplify right side
    1,468.72x = 975,347.58
  5. Step 5: Solve for x
    x = 975,347.58/1,468.72
  6. Step 6: Final answer
    x = 664.08

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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.