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Finding the Fourth Proportional to 503.24, 755.64 and 442.88

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Solution

The fourth proportional to 503.24, 755.64 and 442.88 is: 665.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.24 : 755.64 = 442.88 : x
  2. Step 2: Convert to fraction form
    503.24/755.64 = 442.88/x
  3. Step 3: Cross multiply
    503.24x = 755.64 × 442.88
  4. Step 4: Simplify right side
    503.24x = 334,657.84
  5. Step 5: Solve for x
    x = 334,657.84/503.24
  6. Step 6: Final answer
    x = 665.01

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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.