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Finding the Fourth Proportional to 699.24, 1,050.24 and 425.88

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Solution

The fourth proportional to 699.24, 1,050.24 and 425.88 is: 639.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    699.24 : 1,050.24 = 425.88 : x
  2. Step 2: Convert to fraction form
    699.24/1,050.24 = 425.88/x
  3. Step 3: Cross multiply
    699.24x = 1,050.24 × 425.88
  4. Step 4: Simplify right side
    699.24x = 447,276.21
  5. Step 5: Solve for x
    x = 447,276.21/699.24
  6. Step 6: Final answer
    x = 639.66

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