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Finding the Fourth Proportional to 1,416.52, 2,124.64 and 442.59

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Solution

The fourth proportional to 1,416.52, 2,124.64 and 442.59 is: 663.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,416.52 : 2,124.64 = 442.59 : x
  2. Step 2: Convert to fraction form
    1,416.52/2,124.64 = 442.59/x
  3. Step 3: Cross multiply
    1,416.52x = 2,124.64 × 442.59
  4. Step 4: Simplify right side
    1,416.52x = 940,344.42
  5. Step 5: Solve for x
    x = 940,344.42/1,416.52
  6. Step 6: Final answer
    x = 663.84

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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.